Shirobon and Aobon are rookie B-Da Cops. Their job is to stop crimes that involve time warps. Upon hearing that the space pirate Devil Vader has appeared on the planet Borderland, Shirobon and his friends immediately set out to investigate. The pirate has stolen Borderland's treasure, the 12 Crismonds, and is planning to use them to conquer the universe. However, as soon as Devil Vader touches the Crismonds, all but one disappear into the depths of time and space, as if to ward off evil powers. Borderland's Princess Akabon desperately tries to protect the last remaining Crismond, but Devil Vader has stolen both Akabon and the Crismond! Shirobon and his friends try to get it back, but they are powerless to do anything. Then a mysterious man in a black cloak appears...!? Will the peace of Borderland be preserved?