College student Shen Zhitang's hotel membership card is stolen by her roommate, Tang Yirou. Impersonating a wealthy heiress, Tang Yirou books the venue to host classmates for her birthday, only to discover the membership card only offers discounts and cannot be used for payment. Faced with a huge bill, she shifts the blame and forces Shen Zhitang to pay. After the lies are exposed, Tang Yirou goes astray to pay off her debts, gets successively entangled in disputes, and is finally sentenced due to attempting to retaliate against Shen Zhitang. With the help of friends, Shen Zhitang holds her ground, shakes off the storm, and returns to a peaceful campus life.