Baek Cho-ah, a 20-year-old struggling student, hits rock bottom when she discovers her boyfriend bashing her "terrible" skills in bed on his phone. Devastated and heartbroken, she immediately ends things.

Just when she thought things couldn't get worse, she learns that her weekly tutor and childhood friend, Lee Seung-hyun, is also freshly single for the exact same embarrassing reason. This shared crisis sparks a wild idea: a collaborative research project! “How about we study together? Let’s study sex!”

What starts as purely academic research quickly turns personal. As their weekly tutoring sessions become increasingly physical, the original goal starts to fade. The intense closeness and shared vulnerability slowly ignite real romantic attraction between them.

Will these two accidental study buddies navigate their complicated physical relationship and find the courage to turn their lessons into true love? Get ready for some steamy sessions!