The InvestiGators's new headquarters are in a giant robot towering over the city, and they're stuck between a rock and a hard place! How can they be SECRET agents if everyone recognizes them?

Undercover as Mikey Eyebrows and Vinnie Beardface, Mango and Brash investigate the mysterious glowing rocks that are turning up in the city. Could a rocky relationship from the InvestiGators' past be behind this strange scheme? Find out in their most dangerous mission yet!