It's the Parents' Day and the twins prepare a news show to give their grandpa an unforgettable present. The five siblings prepare a surprise birthday party for Donggook. They make the cake and seaweed soup themselves. Daebak has visited Daeul's house to spend some quality time. They share panties to become big boys and have fun at the Bumsoo playground. It's the new family! It's the charismatic actor Oh Ji-ho and his daughter Seoheun with a pretty smile and lush hair.