"To Put It Mildly" tells the funny story of Svetlyo, who lives on a small street near the city park in the company of his toys - six plastic Indians. Svetlyo tries to fall asleep in his room when a big dog pushes the window open and jumps into the room. The dog sits on the edge of the bed and starts playing his trumpet. What? You consider it strange that a dog plays a trumpet? The oddest thing is that Svetlyo opens his eyes only when the last sound stops. It turns out that the dog has a St. Bernard's heart and has come up with a mission: to save Svetlyo!