Freshman Xu An unexpectedly sees bullet comments and learns that roommate Qiao Yiyi is bound to a theft system, constantly borrowing her items, stealing her looks and talents, and attempting to replace her. Xu An no longer blindly tolerates it, cleverly swapping the ownership of items and repeatedly thwarting Qiao Yiyi's calculations. At the welcome party and dance competition, Qiao Yiyi's opportunistic plans relying on the system fall through one after another. Deeply obsessed, she continually takes desperate risks, ultimately reaping what she sows. Xu An breaks through her predetermined destiny, using her own strength to reap her own bright future.