It is Sodor Surprise Day but Gordon thinks that surprises are silly! Thomas tries to change his mind but one of his surprises goes very wrong! Percy treats everyone to a musical delight which saves his special load from the Smelter's Yard; Thomas takes a famous composer on a tour of the Island to inspire his Music of Sodor; Percy invites his friends to go "Monster Spotting", and it's The Fat Controller's birthday so the engines must work together, with new member of the team Winston, to deliver his very special birthday present!