Bad Genius

Bad Genius

Year: 2017

Runtime: 130 mins

Language: Thai

Director: Nattawut Poonpiriya

CrimeDramaThrillerComedyUnderdogs and coming of age

Lynn, an exceptionally bright student, realizes the potential of her exam-helping scheme and decides to expand it into a large-scale cheating operation. Driven by ambition, she and her friends embark on a lucrative business, transforming exam answers into a surprising amount of money. The operation quickly becomes more complex, testing their skills and pushing them to the limit.

Warning: spoilers below!

Haven’t seen Bad Genius yet? This summary contains major spoilers. Bookmark the page, watch the movie, and come back for the full breakdown. If you're ready, scroll on and relive the story!

Bad Genius (2017) – Full Plot Summary & Ending Explained

Read the complete plot breakdown of Bad Genius (2017), including all key story events, major twists, and the ending explained in detail. Discover what really happened—and what it all means.

Lynn, a top secondary school student living with her Lynn’s father, earns a scholarship to a prestigious school for her academic achievements. There, she befriends the good-natured but academically challenged Grace. The two quickly form a fragile pact: Lynn starts helping Grace cheat in exams after discovering that their teacher has been leaking questions during private tutoring sessions. This uneasy alliance deepens when Grace’s wealthy boyfriend, Pat, offers payment to Lynn to extend the cheating to him and his circle. At first Lynn balks, but she learns that the school has been charging her father extra fees despite her scholarship, a detail that hits close to home since he works as a teacher with a modest income. Motivated by a mix of resentment and necessity, she devises a covert system of hand signals, inspired by certain piano pieces, to transmit correct answers during tests, and soon her client base begins to grow.

The scheme, however, does not stay hidden for long. It is uncovered when another top student, Bank, unintentionally exposes the cheating. The fallout is swift and harsh: Lynn is reprimanded by her father and the school, her scholarship is suspended, and her chances to apply for an international scholarship are revoked. The burden of consequences weighs heavily on her, yet the lure of quick money and a bigger cover story keeps the temptation alive. Nevertheless, the personal cost becomes clear: Lynn’s integrity is rubbed raw as she watches her carefully built future start to crumble under pressure.

Still, the opportunity to escape the sting of consequences pulls Lynn back toward cheating, this time targeting the STIC—an international standardised test used for university admissions—an enterprise that could yield millions of baht. She agrees to work with Pat and Grace, but insists that Bank must be involved, reasoning that he would never embrace dishonesty on his own. Bank, a young man from a poorer background who stakes his future on the same university scholarship, faces his own crisis when he is attacked by thugs and misses the critical exam. Reluctantly, he agrees to join Lynn, and together they begin preparing for a high-stakes, globe-spanning final operation: they plan to fly to Australia to gain a head start on the exams, with the intention of sending answers back to Pat and Grace for distribution to their clients back home.

Tensions rise on the eve of departure when Pat reveals the truth he had ordered the attack on Bank to force his compliance. Enraged, Bank confronts Pat and walks away, leaving Lynn torn by the revelation. Bank later returns to press Lynn to finish what she started, and Lynn confronts a moment of reckoning about where her choices have led her.

In Sydney, the plan unfolds with meticulous precision at first. Lynn and Bank complete the initial sections, but anxiety gnaws at Bank, and he falters under pressure, forcing Lynn to clutch the final section from memory. She manages to bluff her way through a desperate, last-minute feint by pretending to be ill and exiting the test center, where Bank’s denial of knowledge saves her, at least for the moment. Back home, the scheme has been a resounding, if morally hollow, success. Yet Lynn, broken by the experience, rejects the payout and refuses to be part of a broader exploitation.

Months pass and Bank, having invested his share into revamping his mother’s laundry business, reaches out with a new proposal: start a wider scheme targeting national exams like the GAT/PAT. Lynn declines, choosing to walk away from illicit gains. Bank responds with a threat to expose the entire operation, a warning that jolts Lynn into action. She decides to come clean and confesses to her father, who supports her decision and helps her submit a formal confession to the STIC organization.

The story thus follows a young woman caught between ambition and conscience, tracing how her initial brilliance becomes a liability when moral lines blur. It is a journey through pressure, loyalty, and accountability, culminating in a courageous choice to own up to one’s actions and seek redemption, even when the cost is high and the path forward uncertain.

Last Updated: October 09, 2025 at 15:09

Mobile App Preview

Coming soon on iOS and Android

The Plot Explained Mobile App

From blockbusters to hidden gems — dive into movie stories anytime, anywhere. Save your favorites, discover plots faster, and never miss a twist again.

Sign up to be the first to know when we launch. Your email stays private — always.

Unlock the Full Story of Bad Genius

Don't stop at just watching — explore Bad Genius in full detail. From the complete plot summary and scene-by-scene timeline to character breakdowns, thematic analysis, and a deep dive into the ending — every page helps you truly understand what Bad Genius is all about. Plus, discover what's next after the movie.

Bad Genius Timeline

Track the full timeline of Bad Genius with every major event arranged chronologically. Perfect for decoding non-linear storytelling, flashbacks, or parallel narratives with a clear scene-by-scene breakdown.

Bad Genius Timeline

Characters, Settings & Themes in Bad Genius

Discover the characters, locations, and core themes that shape Bad Genius. Get insights into symbolic elements, setting significance, and deeper narrative meaning — ideal for thematic analysis and movie breakdowns.

Characters, Settings & Themes in Bad Genius

Bad Genius Spoiler-Free Summary

Get a quick, spoiler-free overview of Bad Genius that covers the main plot points and key details without revealing any major twists or spoilers. Perfect for those who want to know what to expect before diving in.

Bad Genius Spoiler-Free Summary

More About Bad Genius

Visit What's After the Movie to explore more about Bad Genius: box office results, cast and crew info, production details, post-credit scenes, and external links — all in one place for movie fans and researchers.

More About Bad Genius

Similar Movies to Bad Genius

Discover movies like Bad Genius that share similar genres, themes, and storytelling elements. Whether you’re drawn to the atmosphere, character arcs, or plot structure, these curated recommendations will help you explore more films you’ll love.