An offbeat love story about campus life around An Ziyan and Mai Ding who start military training as college acquaintances. Mai Ding was the one who made the first move to An Ziyan, they have a good relationship and gradually felt sparks. But after their relationship strengthens, their relationship is obstructed by their family and friends. As a result, An Ziyan secretly asks for help from his ex-girlfriend Bai Xiaosi.