

Season 2 • Episode 1
LatestSomeone -- or something -- is stealing water in Acorn Springs. A mystery singer in the woods matches Millie's voice in perfect harmony.
When their animal friends need help, brother-and-sister team Toby and Teri use the clues and follow the facts to solve mysteries in their own backyard.
Writing
Actually educational—teaches hypothesis testing, not just catchphrases.
Practical Effects
Charming low-fi animation that prioritates story over flash.
Acting
Philece Sampler's final role—warm, wacky, deeply missed.
Creator
BJ Lee
Trivia, insights & behind the scenes
One of Netflix's early original kids' STEM pushes—part of a 2018 wave trying to compete with PBS's decades-long educational dominance.
Philece Sampler, legendary anime voice actor (Mimi in Digimon, Toph in Avatar flashbacks), recorded Rumy while battling illness—her warmth carries every scene.