Frania is 13 years old, and although she lacks for nothing, she feels lonely and misunderstood – by both her peers and her busy parents. On her birthday, while traveling in the car with her mother, they accidentally hit a stray dog. The girl immediately rushes to help, names it Smart, and takes it to the vet. It turns out the animal requires treatment and should be taken to a shelter. When her mother vehemently opposes adoption, Frania decides to act on her own – she sneaks out of the shelter with the dog. With the help of a friend and her older brother, she hides from her parents and the shelter staff, who are on her trail. The girl begins posting videos of Sprytek online, and he quickly gains popularity and becomes an internet star. This commotion forces Frania's parents, forced to work together, to become closer and rebuild their family bonds.