When An Qian, a third-year student, meets Lu Che, a first-year student, at the start of a new university term, she only finds him familiar and can't remember why. The puppy is heartbroken for a long time.
Lu Che secretly works to seduce An Qian. An Qian, a sucker for good looks, soon falls for him. The loyal puppy Lu Che competes fiercely for her, and turns into a jealous mess once they're dating.
Later, a misunderstanding drives them apart. Lu Che goes to his older sister's house in the rain to apologize and beg An Qian to forgive him.
In the end, they get together. He's still the younger boyfriend, while she trains him like a dog.
Theme: The younger partner takes charge
