Three Spies and a Baby M.I.High : Season 4 Episode 10

Britain's cleverest couple, the Steins, are kidnapped by the Grandmaster after they built an immensly difficult to crack firewall for MI9 on the way to a conference, however their baby daughter Grace is still safe. Chief Agent Stark is extremely angry that Rose, Carrie and Oscar allowed the Steins to be kidnapped from under their noses and tells them that as he will be sending out his best agents, they can look after the baby, much to Rose and Carrie's dismay. Oscar however is over the moon and adores Grace as if she were his own sister and is more than willing to look after, to the relief of Carrie and Rose. Oscar discovers that Grace is highly intelligent. While this is happening, the Grandmaster forces the Steins to hack into MI9's computer network, and Rose tells Stark to take the MI9 Mainframe offline, which he reluctantly agrees to do. The Steins are dismayed by this as this means they cannot fulfill the Grandmaster's wishes, nor can they see Grace. Instead, the Grandmaster orders them to make a firewall for SKUL. While this is happening, Rose has an idea and plugs Grace into the computer that the Steins have built, enabling her to hack into SKUL's mainframe. After finding them, Stark furiously tells them that they have disobeyed orders while the Steins gratefully take Grace.