When Earth is threatened by insect-like aliens called Kiseichuu determined to wipe out humanity by absorbing their life force—H-energy, the government forms a special squad of superheroes. These heroes harness their erotic energy to gain superhuman abilities in the battle against the bugs. Among them is high school student Retto Enjou, who joins forces with four enchanting girls, including his childhood friend Kirara Hoshino. Despite their past closeness, a rift has formed between them ever since Kirara's traumatic encounter with Kiseichuu. As Retto strives to save mankind, unite his team, and perhaps thaw Kirara's icy facade, the fate of the world hangs in the balance.