An exceptional marksman and hopeless playboy, private eye Ryo Saeba reluctantly forms an alliance with his late partner's sister to investigate his death.
The film revolves around three struggling actors Michio, Gunji, and Enoken, who share a house together. One day, they find a baby girl left with a letter from Michio's ex-girlfriend. They name the child "Don-chan" and embark on the journey of raising her, despite their initial confusion.
A family believes they are aliens from other planets and tries to save Earth from impending calamity.
