It has been wild and windy in Greendale. Pat calls to collect an Australian stamp from the Reverend Timms, who will be visiting London to meet his sister Elsie from Australia.

When Pat arrives at the Post Office, Elsie phones Mrs Goggins to say she will come straight to Greendale because of her flight being diverted to Manchester, and Pat has to catch up with Reverend with the help of Miss Hubbard's bicycle and Ted's roller skates. Will Pat be able to stop the Reverend from catching the train to London?

Pat was on his way to the Post Office to get his brand new vehicle, the Royal Mail Post Bus. He takes Granny Dryden, Miss Hubbard and Ted Glen on their way to Ingledale. They went to buy some drinks and some food from Sam Waldron, stopped by PC Selby who was putting road blocks at the unsafe bridge, so they take a shortcut on the road to Thompson Ground.

They suddenly heard the Reverend Timms cycling on his old bicycle straight into the barn, so he has to go with Pat on his Post Bus to Ingledale while Alf mended his bike. They finally arrived in Ingledale, Granny Dryden goes missing but she soon comes back and they set off home again.

But Dorothy calls Pat about Mrs Goggins who has been on the phone thinking he might have had an accident on his Post Bus so he gives her a ring while his friends have a cup of tea. Pat soon got his friends home safe and sound.