A female assassin is sent out on her ultimate assignment: take out Trionger, a trio of semi-retired super-rangers in power armor (who may or may not have their own line of toys). Unfortunately, she doesn't count on becoming friends with Trionger's unbelievably weird kid sidekick, thereby setting up a confrontation with her own malevolent masters!

Demonic Heroine in Peril

The Earth is at war against Planet Gray in the far future. Nozomu, a soldier, goes after a Gray alien in space but misses him. Cut to the modern-day Japan. Yurie, a graduate student majoring in mineralogy, is doing research about a mysterious ore. It seems no one has written anything about it. When she checks its components, the Gray alien suddenly shows up.