Watch The Spooky Tale of Captain Underpants Hack-a-ween (2019)
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The Spooky Tale of Captain Underpants Hack-a-ween (2019)

The Spooky Tale of Captain Underpants Hack-a-ween (2019)

When Melvin tries to cancel Halloween, clever best friends Harold and George create their own spooky holiday — and it’s a huge success!