"You Only Start Preschool Once" is an episode of Special Agent Oso.
Oso is trying to make an eye scanner recognize him by looking directly at it when a special alert is called. A boy named Sam has just started preschool, but he hasn't made any friends yet. So Oso decides to help Sam make a new friend before his class goes on a nature walk.
- The episode's title is a reference to the James Bond film You Only Live Twice.