Ami, raised in China, is a high school student who practices Chinese martial arts and swimming. She comes back to Japan because of her mother's remarriage. Hiroshi, a careless college student, likes to take women’s pictures secretly. Hiroshi goes to a girls swimming pool locker room to take photos with his friend, Takimoto. When he gets home, Hiroshi sees Ami whom he saw at the locker room. Ami's mother and Hiroshi's father gets married and they go on a honeymoon, leaving the two alone in the house. Whenever Hiroshi tries to get near Ami, her martial arts prevents him but gradually they become closer…

The sequel to the live-action adaptation of Satoshi Yoshida's original manga “Shonan Bakusouzoku”. Kihara, the second leader of the legendary Shonan-ruling team Renga, has fallen. With their hideout surrounded by rival gangs, Renga faces certain doom. Entrusted with command, Nanami Shichigoro and the others rise to save them.