When the ice breaks up on the river, the water will flood Horseshoe Island, and Miles and his wife are trapped there.; Jim's partner has hired two men to kill him and his wife so he can take over the rich mine for himself; Shamus has been robbed and he and his dog left for dead by the robbers. They come to and hide in a cave where young Donnie finds them.; Gray Wolf and his pack are chasing a young bull moose through the snow.