Detective Haruka Namiki of the Special Investigations Unit infiltrates an academy to solve a series of mysterious disappearances. Just as she finds a clue, she is attacked by an otherworldly creature, 'tentacles'! She tries to resist and escape, but the pleasure-inducing mucus secreted by the tentacles causes her body and mind to fall!!! The beautiful girl receives the alien's sperm with a face of ecstasy, going mad with orgasm as it ejaculates inside her!
