Lin Yun, a 36-year-old man, lost his wife at a young age and works for a mid-level private enterprise. He is a single father, and lately, he feels he is facing a midlife crisis. His career isn't going well, his relationship with his 14-year-old daughter is strained, and he's been suffering from shoulder inflammation, which makes him miserable every day. In the past few days, he discovered a secret - his daughter is a magical girl. She's a hero who fights extraordinary monsters and protects the city while in the guise of a middle-schooler. This may be the general perception of magical girls, but he's aware that becoming one is a life-threatening decision. Should he try to stop her or respect his daughter's choice and find other ways to protect her? As he looks at the ashed heart flower in the closet, Lin Yun, a former magical girl who retired nineteen years ago, faces the third major decision in his life.