Last Song for You

So, a washed-up songwriter, is hospitalized for severe gout and contemplates ending his life. In the hospital, he unexpectedly runs into Ha, his childhood love, triggering a flood of memories. The reunion marks the beginning of a long, time-bending journey.

So learns from Bing that Ha has died from cancer. He attends Ha's funeral and begins to grieve in earnest. The news deepens his sense of loss and fuels the journey ahead.

At Ha's funeral, a woman named Summer claims to be Ha's daughter and asks So to scatter Ha's cremated ashes in Japan. So is hesitant but agrees to fulfill the last wish. The request sets in motion a journey that spans time and distance.

So travels to Japan to fulfill the last wish, reuniting with Summer at a hotel. Summer tries to engage him in conversation, but he remains distant, haunted by Ha. The trip begins to stir memories of Ha's past.

During drinks at a pub, Summer plays one of So's songs on the piano, triggering a cascade of memories about Ha. So begins to recall their life together in Cheung Chau and the moments that shaped his art. The music links past and present in his mind.

Flashbacks reveal So and Ha's youth in Cheung Chau: they meet at a record shop and discover a shared taste in music. Ha finds So in the school's warehouse, where they chat, and she offers feedback on his songs. Their bond deepens as they pursue music together.

Ha encourages So to join a singing contest in the urban district, hoping to push his emotional music into the public eye. She believes a public victory could reignite his passion. So makes the risky choice to compete.

On the same day, So confronts his father, who is cheating with another woman. He learns that his father plans to divorce his mother, adding strain to So's already fragile life. Ha's support is tested as she contemplating confessing her feelings.

Heartbroken, Ha grieves the couples' turmoil while her grandmother gives her a crystal necklace capable of transporting a person through time and space. Ha's longing to be with So becomes bound to the necklace's promise of possibility.

Wearing the crystal necklace and making a wish, Ha finds herself in a hospital in the distant future, where her dying future self lies. The future Ha asks her to find So, and reveals that Summer is Ha traveling from the past. The revelation reframes the entire journey.

Back in the present, Summer sneaks into So's room and sends his incomplete song to a producer. After some tension, Summer reveals she is actually Ha from the past and then disappears into a shrine before So can catch up. The moment leaves So with a new puzzle to solve.

So travels to Hong Kong to find Ha's real daughter, who gives him Ha's crystal necklace. He uses it to wish himself back to the past, where he finds the young So and Ha on the beach. The encounter lets the older So guide them toward a different future.

On the beach, older So converses with the younger So and Ha, playing the incomplete song to inspire the younger So to finish it. They share a private chat about changing their fate and promise to strive for a better future. After their talk, the past selves prepare to return to the present.

Back in the present, So reconnects with Ha, who reveals she has survived through alternative treatments. They reunite at their alma mater's warehouse, where So plays his song for Ha, sealing their renewed bond and hopeful future.