In some faraway place, the Laws and the Chuks are two big families that have been foes for a century as they can never stand each other. In a chance encounter, the Law Family’s fourth son Law Mak-au falls head over heels in love with Chu Lai-yip, who is the younger cousin sister of the Chuk Family’s matriarch Chuk Ying-kiu. Lai-yip already has a finacé. If her marriage eventually falls through, Ying-kiu’s status as the chair will be affected. However, due to some past event about herself, Ying-kiu resolutely decides to let Lai-yip make her own choice, sowing the seeds of a duel between the two families. In the meantime, Leung Shan-pak adopts Max Ton as his name and lives in Hoi Pak City, which is the Law Family’s territory. To avoid assassins, he goes to the Chuk Family’s Tin Nam City and then the mysterious Zone 8. He again runs into two women who were seemingly associated with him.
Thirteen-year-old Mei is experiencing the awkwardness of being a teenager with a twist – when she gets too excited, she transforms into a giant red panda.
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.