Schoolgirl Mitsurugi Saya was already having a bad day, what with being unable to focus on classes, and with her brother in the hospital--and then the zombies attacked! One by one, every boy in school is transformed into ravenous beasts straight out of hell, with appendages designed to spread the demonic infection! She manages to find her friends Amatsuka Maria and Momoshiro Momo, and together they fight back...but do they have the stamina to take on so many zombie boys?!

The world is overrun by zombies! Mitsurugi Saya, Amatsuka Maria, and Momoshiro Momo just barely escape school alive in Arisugawa Chiyo's car! They make it safely to Maria's home, where they stop to get some much-needed rest and take extremely sensual baths! (Zombie-fighting is sweaty work!) But while they're freshening up, Yaritagari, whom they thought they'd escaped, invades Maria's home! Can three wet girls take him out?!