The play tells the story of a mental hospital nurse who refuses love because of the difficult burden of life, and a fairy tale writer who does not understand love because of his essential defects. After the two meet, they heal each other's scars. It is a healing love story like a fantasy fairy tale. Kim Soo-hyun will play Wen Kangtai, a mental hospital nurse in the play. His parents died when he was young, and he took care of his autistic brother alone, living a life of sacrifice and dedication. He has no great dreams, nor does he hope that his life will get better. He only hopes to eat well and sleep well with his brother with the meager salary of a nurse, and insist on spending every day. Seo Ruizhi is confirmed to play Gao Wenying, a popular children's writer with antisocial personality. Because of her loneliness in childhood, she showed extreme egoism when she grew up, and she was arrogant, rude, vulgar, and reckless.