Grappling with his feelings for Dal-mi, Ji-pyeong avoids her. Do-san's knowledge of Won-deok's condition inspires a business idea for Samsan Tech.

Devastating news gives Dal-mi another reason to make the app a success. Won Du-jeong's plan to teach Do-san and Dal-mi a lesson backfires.

Do-san and Ji-pyeong struggle to bear the weight of their untold truths. Doubts and a mix-up lead Dal-mi to the place where it all started.