A team of animal heroes with special skills and speedy vehicles work together to keep Big Tree City safe and solve the town's trickiest problems.

A boy and his mum find themselves suddenly transported somewhere across the universe surrounded by an amazing array of aliens from new and unknown corners of the galaxy. While trying to work out who brought them there and why, they make a new home for themselves and encounter new friends, including Mo, the only other being from Earth – a dinosaur.