Nate and his dog are invited to a birthday party where the birthday girl is bringing her four snakes, one of which goes missing.

A friendly competition to grow the best organic garden is underway. The prize is tempting--a ribbon, a photo and article in the newspaper, and some all-you-can eat favorites from Ned's Diner! Esmeralda, Annie, Oliver, and Rosamond are among the competitors. Just a few days before contest judging, some of Rosamond's tomatoes go missing, and Nate and Sludge are called to investigate. Who is eager for tomatoes, and why? Nate and Sludge are on the case...

Esmeralda came up with the perfect name for Rosamond's pet concert. But she lost the pink paper where she wrote the word--and she can't remember what it is. Nate the Great and his dog, Sludge, take on the unusual case, and they are soon braving pink papers and barking, oinking, and talking pets. Will Nate and Sludge find the word in time for the show to go on?