It is the near future. In order to escape from Siberian Railroad who controls the society, Gainer Sanga fights with Siberian Railroad security by the ancient machine named King Gainer with Gachico which is operated by Gain! This action figure includes one left and three right optional hands, a chain gun, chain gun option part, photon mat ring (L, M, S options), optional expression, Gachico, Gane Bijou, 2 character plates, and photon mat ring joint set.