When Reg answers a question about the moon, he thinks he knows everything. But when the Rubbadubbers ask even more difficult questions, Reg wishes he could go to the moon to get the answers. Reg soon discovers it's important to know what you don't know.
| Name | Type | Role | |
|---|---|---|---|
| Andrew Viner | Writer | ||
| Peter Curtis | Writer | ||
| Brian Little | Director | ||
| Jackie Cockle | Director |