The Little Blue Engine is happy when her friends Lucy Locomotive, Choo Choo Charlie, and Engine Eddie come to work at Piney Vale Train Station, but disappointed because she thinks they cannot have a Valentine's Day party.
"Tired of working alone, a little train jumps off the track in search of companionship and ends up at the zoo, where it gives rides and makes people happy"--Provided by publisher.
Thomas the tank engine befriends Stephen, an older engine who has become outdated, but Stephen finds a place he fits in when Ulfstead Castle is restored.