Riley Carter secretly loves her roommate and rival Evelyn Ward, though she hides it behind constant bickering. When she sees popular Noah confess to Evelyn, Riley becomes wildly jealous, pulls Evelyn away, and assumes Evelyn likes men. Too afraid to confess as herself, Riley disguises herself as a boy, “Ryan,” to pursue Evelyn. But Evelyn recognized Riley from day one and plays along, waiting for Riley to admit her true feelings. Meanwhile, Noah actually likes Riley and was only practicing his confession with Evelyn. Through jealousy, identity chaos, public exposure, and emotional confrontations, the two rivals finally stop hiding and become girlfriends.