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Edward, Henry, and Toby is a 2018 special based off of The Great Discovery, and was made for its 10th anniversary.

Plot
Edward, Henry, and Toby try to trick Nia and Rebecca to win their places back at Tidmouth Sheds, but get into serious trouble with Sir Topham Hatt. Thomas wants to cheer the original Steam Team members up by showing them Morgan's Mine.

Characters

 * Thomas
 * Edward
 * Henry
 * Gordon
 * James
 * Percy
 * Toby
 * Duck
 * Emily
 * Molly
 * Stanley
 * Nia
 * Rebecca
 * BoCo
 * Philip
 * Bertie
 * Ace
 * Race Cars
 * Hans
 * Ten Cents
 * Big Mac
 * O.J.
 * Top Hat
 * Warrior
 * Hercules
 * Sunshine
 * Grampus
 * Lillie Lightship
 * Sally Seaplane
 * Cranky
 * Sir Topham Hatt

Locations

 * Tidmouth Sheds
 * Arlesburgh
 * Arlesburgh City
 * Arlesburgh City Station
 * Wellsworth
 * Sodor Ironworks
 * Arlesdale End
 * Morgan's Mine
 * Brendam Docks