The triplets have become real soldiers! The scary instructor with sunglasses suddenly starts going through the triplets' belongings. And Manse suddenly starts crying! What has happened to him? Hwijae visits his school for its 50th anniversary with his twins. They say hi to Hwijae's teacher and look at Hwijae's yearbook. Meanwhile, the village school head teacher visits Sarang! Jion and Taewoong are at the vet to check Saebom's condition. Saebom gets many examinations and Taewoong and Jion are worried. Daebak's new mission! It's to climb up the sofa. He tries to go to dad sitting on the sofa. But his legs are a little bit too short...