Tak Sakaguchi (VERSUS, MUTANT GIRLS SQUAD) directs and stars in this outrageous, gore-drenched action comedy following the son of a murdered Yakuza boss as he is transformed into a robotic killing machine, and seeks violent revenge against his father's killers. Shozo Iwaki (Sakaguchi) is on assignment in South America when he receives word that his father, prominent crime boss Kenzo Iwaki (Akaji Maro) has just been assassinated. Upon arriving back home and learning that the man responsible is none other than Kurawaki (Shingo Tsurumi) - his late father's right-hand man - Shozo sets out to deliver bloody payback. In the explosive battle that follows, Shozo loses and arm and a leg and Kurawaki is knocking on death's door. Later awakening in a clandestine operating room with an M61 Vulcan cannon for a right arm and a rocket launcher for a left leg, the vengeful Shozo realizes he's been given a second chance to settle his score with Kurawaki. Meanwhile, the backstabbing gangster has transformed Shozo's best friend Tetsuo (Jun Murakami) into a drug-crazed killer, and dispatched him on a mission to kill Shozo on sight. Now in order to get to Kurawaki, Shozo will have to go through his best friend first.