The graduation exam for the private "Lesbian Academy" is a 120-minute nonstop lesbian orgy under the strict rule that if you climax, you will have to repeat the year. Led by Erika Kitagawa, the beautiful girls use their fingers and tongues to attack each other's private parts. The longer they endure, the more sensitive they become, and their expressions of agony as they try to resist climax, even as they shed tears. The uncensored camera vividly records the entangled mucous membranes and the glistening love juices. In the end, the girls lose their reason and are engulfed in waves of pleasure, documenting their tearful descent.