Emily's dad is in Mongolia, helping to set up a new project to help endangered snow leopards in the area. When Emily goes to visit him at half term, she can't believe her luck when she makes friends with adorable snow leopard cub, Leo. But not everyone is as pleased that the leopards are making themselves at home. With the help of local boy Bataar, can Emily show the villagers that there's a way to live peacefully with the leopards?