The action takes place in a natural reserve in Canada where Grizzy, a grizzly bear lives in the rangerâ€s house when he is away. He is the top of the food chain and he thinks that no one will dare to question him or try to steal his home, no one but a tribe of Lemmings who are believed and know to be stupid and ridiculous animals who also decide to move in the rangerâ€s house after he is gone.