![A Separation](https://image.tmdb.org/t/p/w185/wQVvASmpm8jGhJBQU20OkoMcNzi.jpg)
Se-ha who is a physically handicapped and Dong-gu who is a mentally handicapped are not their own brothers. But while living 20 years together, the two became indispensable to each other. One day, the mother of Dong-gu suddenly visits him and acts as his guardian.