DANGER DOLLS follows a quartet of cute idol singers who moonlight as butt-kicking action heroines. When extraterrestrial invaders threaten the safety of the Earth after an earthquake unleashes them from an alternate dimension, the Danger Dolls become humanity’s only hope for survival. The team infiltrates the evil cult behind the invasion and must use their swords and their fists to smash the invading army.

Saya Toma (Erika Toda) is a female detective with an IQ of 201. Takeru Sebumi (Ryo Kase) is a career detective with a distinguished background. They work on cases by postulating the “SPEC” of the unknown criminals and then deduce the criminal’s unknown “SPEC” to make arrests. A mystery occurs when bodies are found on a cruiser in the ocean. Saya Toma and Ryo Kase of the Tokyo Metropolitan Police Department are brought in to solve the case.