It's Jung Sook and Ji Ho's daughter Hye Jin's first birthday. Jung Suk's university friends Shin Ja and Mi Sun comes to help her prepare the birthday party. Even Ji Ho's university friends comes to celebrate. Sung Gi is a successful man and Dal Soo's always careful around Sung Gi. Kyung Woo is in multi-level sales business and he comes already drunk. Kang Ko keeps reciting poems. They play go-stop and there seems to be some tension between Jung Sook and Ji Ho. Also, Ji Ho and Jung Sook's once-best friend, Kyung Joo is about to come. It's supposed to be a happy day but it feels like a storm is approaching. Who will explode first?