A Dong (Shawn Yue), who suffers from bipolar disorder, was sentenced to stay in Castle Peak Hospital because he accidentally killed his mother (Elaine Kam) who was suffering from pain. After he was discharged from the hospital, he lived in the cubicle of his father Huang Dahai (Eric Tsang), who was a driver in the mainland. Huang Dahai tried to care for his son, but A Dong did not appreciate it. It turned out that A Dong had always been upset about his father abandoning the family. A Dong returned to society, but was discriminated against by his friends. However, he tried to calm himself down. At the same time, A Dong also tried his best to find Jenny (Gigi Fong), who he almost got engaged to that day. Unexpectedly, when he found Jenny, he felt a different taste.