When first-year medical student Hana becomes fixated on weight loss after reuniting with a dramatically transformed friend, she's drawn into a disturbing world of body image obsession.
Encouraged by her crush, fitness influencer Alanya, to join an intense body transformation program. Hana takes the diet pills her old friend gave her – and they really start to work straight away, but she's unable to afford the high cost, so she tests the contents of the pills - only to discover they contain human ashes.
Desperate for more, she secretly harvests bones from a cadaver in her anatomy class. As Hana begins shedding weight, she is haunted by the ghost of the person she's consuming.
At first a spectral curiosity, then a terrifying, growing presence with a ravenous hunger that begins to consume her life. With her grip on reality slipping and the ghost gaining power, Hana must find a way to break free before she loses control entirely.