At Eighteen

Choi Jun Woo transfers to a new school and befriends Hwi Young, but an unfortunate incident occurs.

Jun Woo becomes tangled up in a watch theft incident and might end up leaving the school.

Jun Woo comes back, but another crisis comes for him after promising not to get involed in trouble.

Jun Woo and Soo Bin grow closer, but great sadness comes for Jun Woo as Jung Hoo says goodbye.

Hwi Young and Ki Tae are worried about getting tied into Jun Hoo's accident as Ki Tae goes to meet Jun Woo.

Jun Woo is worried about Soo Bin not returning home and Han Gyeol starts to get suspicious of Hwi Young.

Soo Bin's mother warns Soon Bin not to get close with Jun Woo and Hwi Young is afraid he'll lose his top spot.

Jun Woo takes the courage to ask Soo Bin on a date while Sang Hoon and Hwi Young agonize over first place.

Jun Woo blames himself for Soo Bin's attitude change and the class plans out their school trip.

Jun Woo feels hurt by Soo Jin not believing him. Hwi Young blames himself. It's the school trip highlight!

Jun Woo and Soo Bin confirm their feelings for each other. Hwi Young removes Soo Bin from the tutoring class.

Jun Woo's mom learns about Jun Woo and Soo Bin dating. Rumors of Hwi Young spread from an online post.

Soo Bin's mom opposes Jun Woo and Soo Bin's relationship. Hwi Young purposely messes up his exams.

Jun Woo meets his dad again and Soo Bin sends Jun Woo a letter. Hwi Young's grade tampering is investigated.

Soo Bin cheers on Jun Woo striving for his dreams and feels guilt for how Hwi Young has changed.

Hwi Young leaves the school. Jun Woo applies for the art contest and learns the truth about her mom.