Rose, Carrie and Oscar are caught on CCTV stealing top secret files from M.I.9 HQ. But it wasn't them, merely robots that were made to look like them. Frank believes that they are innocent, but Stark shows no hesitation in pursuing them. After Frank helps them to escape, they discover the truth about who made the robots.
An expensive golden statue has been stolen from the PM. The team's investigation brings them to Terry Zucker, inventor of the Zucker vacuum cleaners that move around all by themselves. But the get more than they bargained for when Zucker's new Mega-Zucker accidentally activates, creating a black hole.
The team are tasked with protecting Hannah and Olaf Stein, the smartest people in the world, who have just reinvented maximum security to the MI9 mainframe. When they're kidnapped by SKUL, Stark tasks the team with looking after Grace, the Stein's baby daughter, to which Oscar is overjoyed, since he's always wanted a younger sibling. Meanwhile The Grand Master forces the Steins to hack the M.I.9 mainframe, and then build a new one for SKUL.