When Kit the tiny baby beaver is born, they soon discover that they are incredibly special. Kit is a keystone species, who can create spaces for other animals to live in and thrive. But Kit s peaceful life at Stillwater Pond takes a dramatic turn when Kit s best friend, a Green Treefrog, discovers an invasive plant species threatening to destroy all the plants of Stillwater Pond! They must find a new home for all the creatures, but can little Kit brave the unknown for the good of all? Join Kit and their best friend, Benny, on an epic keystone adventure that will change their lives forever.