Sayuka Kouenji is an Escalyer, a guardian android powered by a "Doki Doki Dynamo" that gives her super powers when she's turned on. But when lesbian sex with her able assistant Madoka stops doing the trick, Sayuka needs some help to save the world. To make matters worse, the forces of darkness have sent a new android to earth, and she's equipped with some "optional extras" attached. Enter Kyohei, a young student with no shortage of bedmates. Can Kyohei bring Sayuka to new heights of pleasure before her new enemy attacks?