Someone has broken up into Ms. Stratford's house while she's away, but nothing is missing. His boyfriend Paul thinks the thief was looking for her family's comic books collection, which is very valuable. Paul stays to keep an eye on the house during Ms. Stratford's absence but he needs a carer for his son, Tim. Radish becomes Tim's babysitter and Charly & Co use Radish as an inside spy to unmask the thieves. Things get complicated when Tim disappears from the Baby Club where Radish takes him.