When the tiniest agent in S.P.R.O.U.T. (the Secret Patrol of Really Outstanding Unstoppable Toddlers) springs into action, even a quiet morning can turn into a top-secret adventure. But today, Agent Mirabelle faces her biggest challenge yet, one that no gadget, pacifier-communicator, or loyal lab can solve for her. What do you do when the mission you’re chasing… suddenly disappears?

Agent Mirabelle, the tiniest hero in S.P.R.O.U.T. (Secret Patrol of Really Outstanding Unstoppable Toddlers), suddenly found herself in a mission even grown-up spies would’ve scratched their heads over. One minute it was a normal day… and the next, she was knee-deep in a toddler-sized mystery only her curious little mind could unravel. This one takes a surprising turn.