Fizz and Nimbus return to Wonderwood for a brand-new magical adventure. When a strange glow begins shining from the Forbidden Waterfall, the two friends decide to find out what's really happening. Their journey leads them into a hidden chamber filled with warm, ancient magic-revealing that the waterfall isn't dangerous at all, but the true source of Wonderwood's light. With this new understanding, Fizz and Nimbus set out to share the truth with every creature in the forest so Wonderwood can feel safe, connected, and happy again. Filled with gentle mystery, glowing illustrations, and themes of courage and curiosity, this story is perfect for young readers who love magical worlds and kind-hearted characters. Fizz & Nimbus and the Forbidden Waterfall continues the whimsical charm of the series with a hopeful message about trust, friendship, and discovering what lies beneath our fears.