A new family has joined the show, it's actor Kim Jungtae and his son Yakkung! Look forward to their first 48 hours without the mom. Former baseball player Yang Junhyeok visits Hwijae and he does a great job in taking care of the twins. Sarang practices a birthday song to celebrate her grandpa's birthday. Also he visits Sarang's house in Tokyo and gets a health examination done for the first time in his life. UV visits Tablo to create a children's song. The Jang brothers seem to be going through puberty and becoming more rebellious, so Hyunsung takes them for a counseling session. Guest stars: DJ Tukutz from Epik High, Yoo Se-yoon & Muzie with daughter Soho from UV, Yang Joon-hyuk retired Samsung Lions outfielder, Kim Bo-min with son Seou
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