Christmas is soon approaching in Falmouth, and as part of a charitable exercise a local hospital teams up with the Maritime Line to deliver presents to the children. It falls to Sunny and Salty to complete this important mission, but the delivery proves to be more difficult than envisioned. Meanwhile, Argyle and Goldie find themselves in a very strange series of events.

Loosely based on an old Thomas and Friends picture book and the Thunderbirds episode Give or Take a Million.