Oscar Charlie(2001)

Oscar Charlie is a family adventure series following young Charlie Spinner, who stumbles upon a shocking discovery: his seemingly senile grandfather Oscar is actually a secret agent operating undercover. When Charlie confronts Oscar about his true identity, the two form an unlikely partnership to tackle a dangerous mission together. The show blends humor with action as the boy and his covert operative grandfather navigate espionage while maintaining their cover in everyday life. Their generational dynamic drives the story as Charlie learns what his grandfather has really been doing all these years, and Oscar discovers that having family in on the secret changes everything about how he operates.