Postman Pat is doing his usual postal rounds when he impatiently cross some train tracks before it's safe. This causes a train, Thomas the Tank Engine to run over his beloved friend Jess the cat. Pat wants revenge. Let the fight commence.

Postman Pat and Thomas the Tank Engine's battle rages on. More members of Greendale and Sodor join the fray. Did I mention the two are now in giant mechs?

The mech royal rumble rages on as Postman Pat and Thomas the Tank Engine continue to slug it out. The two titans have brought some tag team partners to join in the brawl, who other than Bob the Builder and Brum.

Now that the fight seems to be over, it's back to normal for Thomas and friends. All seems peaceful on the island of Sodor, Well apart from the sudden carnage and devastation. Is this Pat's doing? but how he's dead...Isn't he?

With Sodor now destroyed and many of it’s residents out of commission, Thomas ventures into the depths of hell to face his arch nemesis, Postman Pat.