Iczer-1 must stop the Cthuwulf invasion of Earth and she finds a partner in the rather reluctant Nagisa,who lost her parents to the Cthuwulf.Even with the power of Iczer Robo,it's anyone's guess if they will survive.

Nagisa is a typical high school student on an Earth overrun by alien monsters. Iczer-3 is the youngest member of a race of fighting robot girls sworn to protect humanity. Together, they're a combat team with spunk, style and charm, but will it be enough to defeat an invading army of killer shape-shifters?