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Plot Summary

Duckweed (2017) Plot Summary Explained

Release, runtime and language
2017 · 102 mins · Chinese
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Starring
Han Han, Mason Lee, Chow Yun-Fat, King Shih-Chieh, Fang Li, Deng Chao

When a son attempts to reconcile with his father, a series of fateful events allow him to experience the father’s life in the past.

On this page (6)
  1. 1 Where to watch
  2. 2 What happens: full plot
  3. 3 Plot questions answered
  4. 4 Movie threads
  5. 5 Movies like Duckweed
  6. 6 Every angle
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Full plot summary · contains spoilers

What Happens in Duckweed: Full Plot Summary

The whole story of Duckweed (2017) explained, from the opening scene to the final frame: every key event, every twist and what it all adds up to. Read it as a quick recap before the sequel, to check a scene you missed, or to finally understand what really happened.

The film centers on the reconciliation between a father and his son. Ah Lang, a youth from a small town, believes his father Ah Zheng never truly understands his occupation and the life he leads. In a pivotal moment, the story pivots from their strained dynamic into something surreal: Xu Tailang, a racer, wins the 2022 China Rally Championship while his aging father, Xu Zhengtai, watches with a smile that hides years of unspoken stories. What follows is a startling turn of events that blurs time and memory.

During a high-speed drive meant to celebrate, an oncoming train crashes into the rear of their car as it barrels along the tracks. The moment of impact doesn’t end the day; it launches Xu Tailang into a vivid, almost cinematic journey back to 1998, in the very town where he was born. The hospital gurney that once carried him toward the future becomes his doorway to the past, and he finds himself living a life he only knew through legends and rumors.

What unfolds is a blend of humor and heart as he navigates comical adventures with his younger father and a cast of characters who populate that era. He also meets his mother, Xiao Hua, a woman whose presence he never knew in life because of the tragedy that followed childbirth. Xiao Hua, portrayed by Xiao Hua in the cast, becomes a central figure in understanding the sacrifices that shaped Xu Zhengtai’s choices and the rhythms of the family he would one day return to.

As Xu Tailang observes life in 1998, he begins to piece together the man his father was long before becoming the older generation he now knows. He discovers the ways his father lived, the deep love he felt for his mother, and the circumstances that led to a prison sentence of six years. These revelations illuminate the sacrifices, missteps, and strengths that defined his father’s past, offering Xu Tailang a new lens through which to view him.

The journey through time deepens the bond between father and son, transforming unresolved tensions into understanding and respect. Xu Tailang’s odyssey becomes not only a voyage through a pivotal decade but also a quiet reconstruction of a family’s history. By the end, the father and son find common ground in the memories, regrets, and genuine affection that time could not erase. This awakening fosters a renewed sense of connection, suggesting that reconciliation might be possible even after years of distance and silence.

Last updated: February 20, 2026 at 12:18

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Plot questions answered

Duckweed Plot Explained: Your Questions Answered

The questions people ask most about Duckweed (2017): what happens in the confusing scenes, why the characters do what they do, the twists, hidden details and what the ending means. Each answer contains spoilers.

Q1

Why does Xu Tailang travel back to 1998 after the train collision?

The train collision during their celebratory drive doesn't kill them but creates a surreal turning point. While lying on a hospital gurney after the accident, Xu Tailang experiences a vivid shift that transports him back to 1998 in the town where he was born. This time travel becomes the mechanism through which he gains insight into his father's past.

  • time travel
  • train accident
  • 1998
  • hospital
Q2

What caused Xiao Hua's death after giving birth to Xu Tailang?

Xiao Hua dies from postpartum depression shortly after giving birth to Xu Tailang. This tragedy becomes the defining loss in the family's history, explaining why Xu Tailang never knew his mother and why his father carried years of grief and guilt. The film portrays this as both a personal and family trauma that shaped all subsequent relationships.

  • postpartum depression
  • Xiao Hua
  • mother death
  • childbirth
Q3

What led to Xu Zhengtai's six-year prison sentence?

Xu Zhengtai served six years in prison due to circumstances related to the period surrounding his wife's death. While in 1998, Xu Tailang uncovers the truth about what happened, learning that his father's choices were connected to the family's tragedy. This revelation challenges Tailang's previous judgments about his father.

  • prison
  • Xu Zhengtai
  • six years
  • imprisonment
Q4

How does witnessing his father's life in 1998 change Xu Tailang's view?

Observing his father as a young man in 1998 allows Xu Tailang to see the person behind the myths and disappointments. He discovers his father's daily struggles, dreams, and the genuine love he held for his mother. This firsthand experience transforms Tailang's understanding from judgment to empathy, as he witnesses the man his father was before becoming the complicated parent he knew.

  • 1998
  • father son relationship
  • understanding
  • perspective change
Q5

What does Xu Tailang learn about his father's love for his mother?

Through his time in 1998, Xu Tailang witnesses the deep love his father had for Xiao Hua. This revelation helps explain decades of his father's choices, silence, and emotional distance. Understanding this love humanizes both parents in Tailang's eyes and provides context for the sacrifices and mistakes that shaped the family.

  • love
  • Xiao Hua
  • Xu Zhengtai
  • marriage
  • sacrifice
Q6

How does the time travel experience lead to reconciliation between father and son?

The time travel allows Xu Tailang to experience his father's life directly, witnessing both his strengths and mistakes. By understanding the circumstances of his father's past, including the loss of his mother and imprisonment, Tailang moves beyond resentment. Each shared moment in 1998 builds a bond that translates back to the present, fostering genuine reconciliation.

  • reconciliation
  • father son
  • time travel
  • understanding
Q7

Why does Xu Zhengtai seem disconnected from his son's racing career?

Xu Zhengtai's distance from his son's racing career stems from years of unspoken stories and unresolved grief. The film hints that his inability to connect stems from the trauma of losing his wife and the guilt associated with the circumstances that led to his imprisonment. His presence at the 2022 championship, despite the tension, shows his underlying pride and desire for connection.

  • racing
  • father son conflict
  • career
  • disapproval
Q8

Which moment in 1998 has the biggest impact on Xu Tailang?

Meeting his mother Xiao Hua becomes the most emotionally significant moment for Xu Tailang. Since he never knew her due to her death after childbirth, encountering her in 1998 provides closure and a deeper understanding of the family's tragedy. Learning about her struggles with postpartum depression and seeing the love between his parents fundamentally changes how he views his family history.

  • Xiao Hua
  • meeting mother
  • emotional impact
  • family history
Q9

Why does Xu Zhengtai never explain his past to his son?

Xu Zhengtai's silence about his past likely stems from the weight of unresolved trauma and guilt. The film suggests he carried the burden of his wife's death and prison sentence without sharing these painful details. His silence is not indifference but rather an inability to confront these memories, which the time travel finally allows him to address indirectly through his son's journey.

  • silence
  • secrets
  • communication
  • father son barrier
Q10

How does the time travel affect Xu Tailang's relationship with his father in the present?

After returning to 2022, Xu Tailang carries the lessons and memories from 1998 with him. These experiences reshape his perspective, allowing him to see his father not as a disappointment but as a complex man shaped by loss and sacrifice. The film closes with a renewed bond, as both choose understanding over judgment, marking a lasting shift in their relationship.

  • present day
  • relationship change
  • reconciliation
  • return

Movie threads

More Movies Like Duckweed, by Mood & Story

Curated lists built around what makes Duckweed tick: the same mood, the same kind of story or the same emotional payoff. Each list explains why these movies belong together.

Father-Son Reconciliation Stories Like Duckweed

Difficult family relationships mended through understanding and empathy. Discover movies like Duckweed that explore complex father-son relationships. These emotional dramas use unique narrative devices to bridge generational gaps, focusing on themes of understanding, forgiveness, and shared experience.

  • emotional
  • reflective
  • hopeful
  • dramatic
  • nostalgic
  • cathartic
  • Tone: bittersweet, emotional
  • Pacing: steady, character-driven
Why these movies?

The story pattern: These stories typically begin with a state of conflict or emotional distance between a parent and child. A catalyst—often supernatural, like time travel, or a shared crisis—forces them to see each other's lives from a new perspective, leading to a climactic moment of understanding and a bittersweet resolution that acknowledges past hurts while building a hopeful future.

Why they belong together: Movies are grouped here because they share a core focus on repairing family bonds, using emotionally resonant journeys to explore themes of empathy and forgiveness. They balance heavy emotional weight with moments of levity, resulting in a deeply cathartic and reflective viewing experience.

Bittersweet Time Travel Movies Like Duckweed

Personal histories revisited with emotional weight and introspection. If you liked the emotional time travel in Duckweed, explore these films that use a journey to the past for personal growth and family understanding. Similar movies blend drama with speculative elements for a thoughtful, bittersweet experience.

  • nostalgic
  • reflective
  • melancholic
  • dramatic
  • emotional
  • hopeful
  • Tone: bittersweet, melancholic, hopeful
  • Pacing: steady, reflective
Why these movies?

The story pattern: The narrative follows a protagonist granted an unexpected window into their personal past. This journey is less about changing major events and more about understanding the context of key relationships and hardships. The climax is an emotional revelation that re-contextualizes the present, leading to a resolution tinged with both the sadness of loss and the warmth of newfound understanding.

Why they belong together: These films are united by their use of time travel as a vehicle for emotional introspection rather than high-stakes sci-fi. They share a steady, reflective pace, a bittersweet tone balancing melancholy and hope, and a focus on character-driven stories about love, loss, and reconciliation.

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Movies Like Duckweed

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Every angle

Duckweed (2017) Explained: Plot, Timeline & Characters

Everything about Duckweed in one place: what happens in the plot summary, the timeline in chronological order, the characters and meaning and a spoiler-free summary. What's After the Movie adds the cast, box office and post-credit scenes.

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