Majime ni Fumajime Kaiketsu Zorori
まじめにふまじめ かいけつゾロリ
Season 1 focuses on the wizard Nelly and the mysterious Najo as Zorori, Ishishi, and Noshishi help them restore the magic forest in a magical country (episodes 1-50).
Season 2 focuses on Puppe's search for the Minus Eel (episodes 51-97).
(Source: Wikipedia)