Make a fictional story about the filming of Reply 1988 in Uijeongbu. After the filming, the Reply 1988 cast members (Lee Hyeri, Ryu Jun-yeol, Park Bo-gum, Go Kyung-pyo, Ahn Jae-hong, Lee Dong-hwi, Choi Sung-won and Ryu Hye-young) were resting in evening. Dong-hwi intends to put some pie on Hyeri's face. He bought some cream pies from the bakery. Hyeri was fixing her hair and her clothes in the house shoot. Then she leaves, and Dong-hwi throws the pie in her face. She went a bit angry but delightful. And Hyeri threw some pie onto him. Jun-yeol, Bo-gum, Kyung-pyo, Hye-young, Sung-won and Jae-hong overheard Dong-hwi and Hyeri throwing pies at each other and discovered the pies in the neigbhorhood. They were interested in throwing pies at the co-stars. The cast members were covered in pie, which Shin Won-ho, the director, noticed. He was concerned for them. Sung Dong-il, Lee Il-hwa, Kim Sung-kyun, Ra Mi-ran, Kim Sun-young, Yoo Jae-myung and Choi Moo-sung were shocked to see their on-screen children covered in pies. Add some dialogues.