On the day the eighteen-year-old top student Su Wanqing was admitted to Huajing University, her mother was suddenly diagnosed with cancer. To save her mother, she signed a seemingly life-saving research agreement, only to step into an endless abyss. Chip implantation, collar numbering, quadrupedal restraints, nipple and rear hole sensitivity development, whistle-induced orgasm reflex, lactation and nursing training… The once cool and proud, heaven-favored daughter was gradually and thoroughly turned into a dog. Even more cruel was that the agreement she personally signed led her gentle mother to become a breeding bitch who could only wag her tail and beg, letting male dogs suckle from her teats, even before her. From a freshman at Huajing University, to the champion of a beauty dog competition who climaxed 53 times yet couldn't stop squirting, to a personal pet in a villa wagging a pink fox tail… When she finally pressed her fingerprint on the permanent registration certificate, the pink collar around her neck became a destiny she could never break free from. She was no longer Su Wanqing. She was just Master's most obedient, most slutty, and most debased little pink bitch.