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What Is That Thing?/Buster's Best Behavior

Season 4 Episode 9 | 26m 56s

Arthur and friends encounter a mysterious and magical device that solves all their problems. What is that thing? / Buster knows he's fun, but he's beginning to feel like he's not particularly good at anything. Arthur knows he's smart, but he's beginning to feel like he's boring. When Buster and Arthur try to become like each other, everyone feels confused!

Aired: 05/19/20 | Expires: 12/04/25
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