He Ying soon befriends May, who takes advantage of his confusion about the modern world by charging him exorbitant amount of money for rent, food, and so on.

After several encounters in the modern world including meeting May's mother, fleeing custody of the police (using his master martial arts skills), and the use of technology, He Ying starts to figure out who is ultimately hunting down Cheung.

[2][11] Lead actor and action director Donnie Yen said that a seven-minute fight scene took ten days to shoot.

[13] Filming locations include Hong Kong's defunct Kai Tak Airport[2] and the Changbai Mountains.

"[17] Screendaily writes the film is "beset by multiple problems, from a patchy incoherent script, to jarring shifts in tone and genre, and sub-par action and effects sequences that even the star presence of Donnie Yen may find hard to reconcile.