Shindou Ranmaru has just graduated from police academy and assigned to Tokko: Special Mobile Investigation Force. On the day of his graduation, he meets the half-naked girl he has been seeing in his dreams. Her name is Rokujo Sakura and she works for a secret group within Tokki, known as Tokko: Special Public Safety Task Force. Shindou ends up joining Tokko to avenge his parents' death, and solve the mysterious mass murder of residents in his hometown of Machida. Meanwhile, bottomless pits begin appearing around Japan, and mysterious creatures emerge from them. Could these events be linked to Machida Massacre? (Source: DVD Complete Series Back Cover)

A little bit in the future, the government has established a brand new organization with the purpose of rescuing lives to respond to the increasingly complicated and varied types of disasters, accidents and crimes that go beyond human comprehension. It is called the Mobile Emergency Police DRIVE HEAD force combining specialized police, firefighting and rescue skills. DRIVE HEAD is an advanced mobile device that transforms in form factor from car to humanoid walker vehicle. The drivers are high-aptitude, grade school students such as Go Kurumada who collaborate with mobile emergency police adults and rush to crisis situations to secure public safety and preserve the peace for all! (Source: TBS Global Business)

One day, the Mobile Rescue Police is attacked by the mysterious boy, Terra. His identity was an android the Evil AI was operating. Because of Terra's powerful energy, Gou and the others are unable to drive the Drive Heads. Furthermore, the earth is in a big pinch when Terra becomes giant and swallows up his surroundings. In this unprecedented emergency situation, Team Drive Head must once again launch. Will Gou and the others be able to protect what's important? (Source: Tomica Wiki)