Cheung Sung-bong is a highly respected cop with a long history of success in dangerous cases. However, his past soon comes back to haunt him when a former protégé resurfaces, seeking revenge.

Lam Ka-wai is a young rebellious man who seldom goes home early and always quarrels with his parents. One day, a zombie followed Lam back home. Except for Lam, both of his parents and sister became zombies. Even though Lam managed to keep them under control, he could not leave his home. Forced to stay there, Lam had no choice but to live with his family. He had never really cared about his family, but he was starting to learn how to get along with them. Lam gradually understood their daily habits and started to regret not cherishing the good old days with his family. Unfortunately, Lam was later bitten and also turned into zombie when he searched for food outside. Will Lam choose to die with his whole family or become zombies all together?