It is an unusually warm spring and the snow is melting faster than usual. Scientists have come to the North Pole to study the changes. When Lars discovers the submarine, he also discovers two baby polar bears that the scientists have rescued from an ice floe. Lars promises to take the cubs back to their parents. But can he do it?

When a young polar bear peers inside a train, the little Siberian tiger staring back at him pleads to be taken home.

When Little Polar Bear is caught in a fishing net which brings him to the city, the ship's friendly cat helps him return home.

Not wanting to hibernate alone, a young bear heads south and meets three grouchy dormice when he gets lost in a snowstorm.

When Lars discovers that there is hardly any fish left in the fishing bay, he and his friends come up with a plan to stop the ships that are rumbling through the bay and chasing the fish away.

Lars the polar bear teases his friend Hugo the hare for being afraid of everything, until the day they get lost in the snow.

While looking for a friend, a little polar bear is caught in a trap and takes a long journey before finally finding his way back home.