The triplets try recording the "T-Rex Song" with the help of the hip-hop singer Sean. It's time for dinner with Uncle Jaewook for the twins. They all sit down together to have the health food Hwijae made but Seoeon is busy reading a book. Will Seojun be able to bring Seoeon back to the dinner table? Sarang and Sunghoon are out to try water sports! Wakeboarding is very hard for beginners but Sunghoon stands up with his great arm muscles and perfect pose. Taewoong has taken Jion to the cooking class! They try making rice rolls but Jion starts eating the ingredients... The 2nd part of Seola and Sua's birthday party! The kids have fun with Donggook all day with the special guest, Daebak. (Source: Wikipedia)