A street hooker named Hyeon-ah (Jeon Yoo-jin) is locked up topless in the pension of a man named Jeong-ho (Heo Dong-won) who saved her from her pimp's abuse and beatings. She was locked up for no reason and every time she struggles against him, he hits her. A couple visiting the pension find Hyeon-ah and the man who wanted to rape her is killed by Jeong-ho. Hyeon-ah tries to run away from him but realizes she has nowhere to go.
Brooklyn mobster and prolific hit man Jimmy Conlon has seen better days. Longtime best friend of a mob boss, Jimmy is haunted by the sins of his past—as well as a dogged police detective who’s been one step behind Jimmy for 30 years.
Bound by a shared destiny, a bright, optimistic teen bursting with scientific curiosity and a former boy-genius inventor jaded by disillusionment embark on a danger-filled mission to unearth the secrets of an enigmatic place somewhere in time and space that exists in their collective memory as "Tomorrowland.