Wu Liuqi (Seven) is a goofy, selective-amnesiac young man who works as a hairdresser on Chicken Island. Seeking a way to raise one million yuan to recover his lost memories, his savvy, fast-talking shape-shifting chicken friend, Dai Bo, convinces him to become a budget contract assassin. Armed with a pair of telekinetically controlled hair-cutting scissors and a magical egg that allows him to transform into anything, Seven sets out to complete hits.
The trouble is, Seven is entirely too soft-hearted and clumsy, usually completely butchering his assignments or accidentally resolving his targets' problems instead of killing them. However, underneath his inept hairdresser persona lies a dangerous, forgotten past: Seven was once the Xuanwu Kingdom's legendary, lethal top-ranked Shadow Assassin, and his peaceful island life is about to collide violently with international threats.