A reunion romance that takes place over 15 years when two men and women, who loved each other passionately when they were in school but had to make a painful breakup due to antagonism between families and the mischief of fate, meet again.
E1
Seok Ji-won and Yun Ji-won reunite after 18 years, as chairman and gym teacher of the same school.
E2
At a staff dinner, Seok Ji-won makes a bet with Yun Ji-won over whether the "crazy lilac" will bloom.
E3
Seok Ji-won and Yun Ji-won meet at the pond where they used to go on dates but get into another fight.
E4
Yun Ji-won recalls her past with Gong Moon-su, and Seok Ji-won ruins the inauguration ceremony.
E5
The two families fight over the golf course, while Yun Ji-won secretly nurses Seok Ji-won's cold.
E6
Yun Ji-won becomes furious when Seok Ji-won forgets their kiss from the night before.
E7
Seok Ji-won and Yun Ji-won begin dating and discover old letters and texts they had sent each other.
E8
Seok Ji-won hopes to enjoy a workshop with Yun Ji-won. He gets anxious by the rumors of Gong Moon-su.
E9
Seok Jiwon and Yun Jiwon's relationship becomes public and starts to cause trouble. Seok Jiwon plans to propose to Yun Jiwon.
E10
Seok Ji-won continues to plan his proposal, but unexpected situations keep getting in the way.
E11
Seok Jiwon uncovers shocking facts about Ji Gyeonghun's corruption during his investigation. Yun Jaeho confronts Ji Gyeonghun at his villa.
E12
The truth behind the incident from 12 years ago is revealed. Yun Jiwon and Seok Jiwon's love blossoms as they prepare for their wedding.