"I mapped out all the trails that we're taking for Jessup. He knows the area and he agreed they were fine for us and the horses...nothing's going to happen." Famous last words... Matt takes Reilly, Grace and three of the young Tagger Herd horses on a training trip to the rugged mountains of the Idaho Clearwater National Forest. Trail riding in the mountains he loves, with the teenagers and beloved horses begins as a great adventure, until they witness a plane go down and rush to help.