Baek Jang-mi is a sophomore majoring in design, a rich girl who grew up without experiencing any hardship in life. Jang-mi's parents want to marry her off to an eligible man they chose for her, but she rebels and begins dating engineering student Park Cha-dol. Lively and outgoing Cha-dol was raised by a single mother, and he's eager to graduate and start earning money to take care of his mom. But when Jang-mi gets pregnant, she and Cha-dol are forced to change their plans, and must begin raising a child while both are still in college. In the process, they slowly gain maturity and learn the true meaning of love.