From the creator of CAPTAIN UNDERPANTS, comes a BRAND NEW out-of-this-world friendship adventure - in full colour! Having a Mighty Robot as a best friend is great, especially when he can help build a fort!

But when Ricky's cousin Lucy shows up, she renames the fort a "castle" and says it needs curtains - rats! But these are the least of Ricky's worries. . . Nimrod Night Crawler has created a wormhole so he can send his army of evil Night Crawlers to help him take over the world, and Ricky's Robot is trapped in a deep pit!

Without his Mighty Robot, it's up to Ricky - and an unlikely hero - to put a stop to this nightmare from Neptune!