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"" is an uncharacteristically modest film from producer Sam Spiegel (during his "S. P. Eagle" years). Bobby Driscoll plays a young boy who feels neglected and misunderstood at home. Preparing to run away, Bobby chances across an old diary once kept by his grandfather (Charley Grapewin). Leafing through the yellowed pages, Bobby discovers that grandpa went through many of the same childhood travails that Bobby is enduring at that moment--and look how well gramps turned out! Armed with a renewed understanding of (and appreciation for) his elders, Bobby decides to stick around for a while and see how things develop.

How to Watch When I Grow Up Legally and Safely

If you want to stream When I Grow Up through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry When I Grow Up films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.