Christmas gets weird — really weird — after George and Harold go back in time to change up a few of their beloved holiday's traditions.

In the midst of their concrete and metal city, five best friends discover something they've never seen before - a tiny sprout. Our heroes decide to protect this delicate, unique, colorful little thing - which isn't easy. They don't even know what it is! Run ragged, yet undeterred, these inventive friends keep the sprout safe and discover what it needs to live and thrive. In helping the sprout become a beautiful tree, they bring about a fun change and make a lasting, joyful impact in their world.

When Melvin tries to cancel Halloween, clever best friends Harold and George create their own spooky holiday -- and it's a huge success!

The Fix-It Force makes a plan to hit every home as fast as they can, delivering Blunderberry Cakes before the town awakes to avoid a holiday disaster.

In this interactive special, Harold and George need your decision-making skills to stop Krupp from blowing their beloved treehouse to smithereens.