On a faraway mountaintop, eight kids with guns watch over a hostage and a conscripted milk cow.
Twenty years after three teenagers disappeared in the wake of mysterious lights appearing above Phoenix, Arizona, unseen footage from that night has been discovered, chronicling the final hours of their fateful expedition.
After suffering life changing injuries in the line of duty, bomb disposal officer Fung turns his back on the police. But when a devastating series of bombings sweep Hong Kong, the police suspect their former ally may be involved after he is found unconscious at a crime scene. Now faced with memory loss and recalling only fragments of his former life, Fung sets out to uncover the truth and find out who he really is.
