Cole and Clare love to play with Bonnie, their little toy Friendship sloop, in Moosehead Lake, where the mighty Kennebec River starts its long journey to the ocean. Every night, Cole ties Bonnie tightly to the dock so that she will be safe and sound until the next morning. But one evening as the moon shines over the lake, the ropes knot comes loose and Bonnie drifts away. Bonnie is helpless as the rivers strong current pulls her downstream. Frightened...