Thomas the Tank Engine heads out to sea to find building materials for the Island of Sodor's new Rescue Center and winds up needing to be rescued himself.
Percy is teased by the other engines when he tells them that the night before, as he thought about the upcoming parade, he saw a giant dragon rumble by.
Thomas and the other engines worry that Sir Topham Hatt will get rid of the trains. James learns a lesson about bragging. Percy puts together a 'good luck' package for a wedding.