River and the Missing Yellow Wellie Mystery

When Bertie, Lexie, and Miley wake to find their best pal Teddy has vanished overnight, the three quickly realize this is a problem way too big for the pint-sized boots to handle by themselves. With a little help from their favorite human, River, and the flakiest detective in town, Walter Wellie, they embark upon a desperate mission to solve the mystery of his disappearance. But will they ever be reunited as a foursome? Or will they end up with one more member of the gang than they bargained for…