As the Blue Mountain Quarry is winding down for the night, Rheneas discovers a deer. Luke takes a liking to it, and wants to keep his new friend around. The others are not sure the quarry is the right place for an animal, but Luke is determined to prove them wrong.

Charlie finds an elephant on the track and tries to alert the other engines, but no-one will take him seriously as they believe it's just another joke. Charlie starts to doubt himself, but discovers the elephant really did escape from the Sodor Animal Park and has to search for someone that'll believe him.