Soo-hyun promises Saet-byul to go to Snake's concert to spend some quality time. She also invites Young gyu. Meanwhile, Dong-chan finds a photo of Young-gyu and his mom at Bong-seop's place and wonders why Bong-seop has the photo.

Soo-hyun breaks into Moon-soo's house to find evidence that he is the criminal. However, countless photos of Saet-byul that were posted on the wall were gone. Meanwhile, Saet-byul also disappears after going to a market to eat an ice cream.