Full title reads: "Wonders will never cease ... especially in aviation! Jimmy Mattern - safe - in wildest Siberia, after having been given up for lost for 4 weeks!

Library footage of American aviator Jimmy Mattern climbing up into the cockpit of his plane and waving to the camera with a shout of 'So Long Fellas'.

Intertitle reads: "and here's the first 'flying train aeroplane', tows 3 gliders from point to point - aviation's latest wonder!"

A plane speeds to take off on a dusty runway. Three gliders are being towed behind it. They too take off.

Various shots of the gliders being towed by the plane.

The gliders come in to land.