In the wilds of the Canadian Rocky Mountains, a mother moose tends to her newborn calf. Spring is in full swing but this far north, winter is never far away, and with hungry bears and wolves for neighbours, many challenges lie ahead. Local cameraman Hugo Kitching knows this only too well but he is determined to follow the mother and calf through the four seasons. What unfolds is a very intimate story, and when Hugo finds a second moose calf born late in the year, things take an unexpected and dramatic turn.

In central Australia, Brolga, the world's most famous kangaroo mum, is learning what it takes to look after his extended animal family. The three emu chicks are beginning to wreak havoc, the camels are rapidly outgrowing their backyard enclosure and Pete, the southern hairy-nosed wombat, is proving to be quite a handful. To help, Brolga's looking to move some of the animals to his 80-acre sanctuary. But, a clash with his old sparring partner, Roger the alpha male kangaroo, has left Brolga on crutches and put all of his plans, including those for the new wildlife hospital, on hold.