Near future, Japanese government successfully developed new energy "Ψ" called psi that have been laid under its land from ancient time. Sakuya, Goht and Leon who are special forces "Kerberos"dedicate themselves to protect secret of Ψ from various powers .
The strongest solder is a beautiful girl, Sakuya. She has a trauma but stands with team members, Goht and Leon, who admit her strength and weakness.