Haru buys a violin and gets her first lesson from a pretty teacher. The Jang brothers continue their adventure in Busan with Yakkung and finds out just how important Busan is to their mom and dad. Sarang has a listen with a tutor in Korean. Later Sarang has fun with Yuto at daycare but their violent relationship continues to go up and down when Sarang takes Yuto's grapes and refuses to share them. Hwijae and Seoeon have fun with Yun Hyeongbin and cooks a romantic birthday breakfast for his wife.
Guest stars: Kim Jung-tae with his son Kim Ji-hoo (Yakkung), Yoon Hyeong-bin