一對在城里做護工的夫妻，因為需要全天24小時看護老人而許久無法見面，于是他們相約在照顧的老人去世以后，發(fā)生親密關系。 　　A couple who work as carers in the city are not able to see one another because they need to take care of the elderly 24 hours a day, so they promise each other to have an intimate relationship after the passing of the elderly person they take care of.