SolarmovieOne

A messenger delivers an invitation to Betty Boop to come over to Grampy's house for a party and bring the gang. The delighted Betty goes down the street singing "I'm on My Way to Grampy's" and is joined by a fireman who is rescuing a damsel-in-distress but tosses her back in the burning building in favor of following Betty...anywhere; a policeman who deserts his traffic-directing at a busy intersection; and two moving men. Betty and her gang arrive at Grampy's, and Grampy shows off a few of his Rube-Goldberg inventions while serving punch-and-cake. Betty thinks the party needs a little music, so Grampy employs several of his contraptions and devices, and all hands are soon dancing to the Hoosier Hotshots' version of "Tiger Rag."

How to Watch Betty Boop and Grampy Legally and Safely

If you want to stream Betty Boop and Grampy 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 Betty Boop and Grampy 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.