Tessa and her cousin Hugo grab their snorkeling gear for an underwater adventure and end up learning that trees in the water are helpful to fish. A friendly neighbor teaches them how downed trees are like a fish hotel, providing shelter, food and a place to lay their eggs. 

When the kids find out Uncle Henry is going to remove a downed tree from the water, they make the case to keep it in the lake as a fish hotel. This story of cooperation and friendly neighbors captures the spirit of “up north” and teaches us how leaving trees in the water helps fish and lakes.