Tatsu (Hiroshi Tamaki) was once a legendary gangster called the "Immortal Dragon", washed his feet and now lives peacefully with his wife Miku (Haruna Kawaguchi) and daughter Himawari. He lives a busy life as a "housekeeper" who puts his life into housework. On the other hand, the Tenjakukai, to which Tatsu was belonged, under pressure from rival Oshiroyama-gumi. With the power of the current Tenjakukai, it is unlikely that it will beat the Oshiroyama group. Tatsu's former brother, Masa (Jun Shison), begs to return to the group. However, Tatsu refuses, saying, "I have become a stay-at-home husband." Meanwhile, an incident occurs in which the tension between the Tenjakukai and the Oshiroyama group further increases. The dragon who witnessed the gracious people being cornered cannot be left alone (thetvdb.com)