One of the chickens is laying her eggs. One chick, two chicks and OOPS! The third chick's legs pop out of the bottom of the egg. Oh dear, it's a little bit stuck! 

Wait a minute - the egg is running off! Can the Squirrels help bring it back to the chicken safely? There's a big world out there to explore so the Squirrels need to be quick. Oh, and they must make sure they find the right egg to return!

Duggee gets a delivery, which arrives in a big cardboard box. The Squirrels discover that cardboard boxes can be very interesting - Roly makes a car out of one, Tag makes a tunnel and then all the squirrels make the biggest cardboard castle ever seen. They dress up as brave knights in cardboard costumes, but when they get to their castle, they discover it is already occupied by those naughty mice!