When a foreign man known by the nickname Reaper Moss plots to steal the Japanese seed bank project in an effort to control the future food stores of humanity, he uses his vast resources and technological prowess to do so. Ryoma squares off against a supercar with abilities that surpass even the WinSquad. WinSquad is destroyed, and Ryoma hovers on the brink of death. What will become of Special Rescue Police Winspector? Is this really the end?

With the new transformable WinSquad, Ryoma tracks down Reaper Moss, trying to stop him from stealing the Japanese Seed Bank Project and rescue Dr. Satomura. However, incidents begin to befall the Winspector team. Bikel and Demitasse are ambushed and taken out of commission, and Walter walks right into a trap. When team is attacked during a supposedly secret stakeout, an uncomfortable truth becomes apparent: Reaper Moss has a spy. Get ready for the fight of a lifetime as Winspector prepares to storm Reaper Moss' well defended stronghold.