Bong-soo loses his memories from an accident, which disables him to recognize his family. Due to this condition, and his ever-increasing odd behaviors, his relationships get mixed up. He treats his wife as his daughter and mistakes her daughter for a friend. Ironically, his friends and family start to accept the situation as they derive some comfort and warmth from it.
Oh Dae-hwan
Oh Yoon-ah
Ahn Suk-hwan
Lee Jun-hyeok
Ko Kyu-pil
Shin Soo-yeon
Kim Do-ah
Shin Kang-kyun
Jung Hee-tae
Park Jeong-hak
Lee Yoo-jun
Jung Ae-ri
Lee Chan-yang