Gay graduate student XU Chun-mao came from a mafia family, but he chose to conceal his background and become a research assistant where, in the name of “academic research,” he plans to return to the underworld to avenge the death of his parents. Through his sister XU Tian, he is introduced to Nan-ge, who arranges for him to live with a group of “Siàu-liân-á” in the underworld.
What is the story behind the vulgarity, tattoos, drinking, and intense loyalty of these “Siàu-liân-á” embarking on this dark road? As their relationships develop, Chun-mao discovers that he is more interested in the honest and physical reactions of these brothers, whether it is a brother who is obsessed with leather shoes, an immature underage brother, or a brother with dark childhood secrets… He even falls in love with “Aang,” the brother sent by Nan-ge to protect him.
But crisis approaches as Chun-mao falls into a quagmire because of his revenge plan, where he must decide the true meaning of brotherhood.