Set in the tumultuous 70s and 80s in Hong Kong, a group of young people from different backgrounds pursue their dreams amidst the rapidly changing city. Tian Yongtai accidentally kills someone and goes to prison, where he befriends Xu Weikang. After his release, Tian's complicated love triangle with his ex-girlfriend and a friend leads to unexpected challenges, with Weikang becoming a formidable foe. The drama explores themes of friendship, love, and justice as Tian faces a difficult choice.