LUO Yu-nong, Mama-san of the “Guang”, has experienced the life and death of her besties, her beloved and her son. She is indifferent to everything, and the only thing she can’t let go is one of her besties Shu-hua who has committed with murder. Yu-nong sent Shu-hua to Japan and sheltered in a host club called “Xu Ri” in Shinjuku. Unexpectedly, Shu-hua disappeared suddenly for no reason. 　　Yu-nong went to Japan to search for clues, and found that Shu-hua was involved in a dispute between “Xu Ri” and a Japanese-Taiwan gang in Taiwan called “Dongsheng” host club. In order to save Shu-hua, Yu-nong had no choice but to go back to Taiwan and gather the sisters from the “Guang” Hotel to undercover into “Dongsheng” to find the gangster’s traitor.