When swim team captain Kai Zhang wakes up to another ordinary school day at Riverside High, his biggest worry is hiding his crush on Lucas Chen, the charismatic student council president. But as cherry blossoms fall outside their classroom windows, something sinister spreads through the halls. What begins as strange behavior and empty seats escalates into a nightmare that transforms teachers and students into something inhuman. Now Kai, Lucas, and their friends must fight through a school where familiar faces have become deadly threats. With time running out and the infection spreading, Kai realizes his unspoken feelings might not be the only thing he takes to his grave. In this heart-racing story of survival, love, and sacrifice, the hardest lesson isn't just staying alive-it's deciding who to save when the world falls apart.