After mechanical failure stops them from taking part in the Centenary Air Race from Australia to Britain, Kingsford Smith (Ron Randell) and PG Taylor (playing himself) decide to attempt the Pacific crossing to the US, but starting from Australia. Smithy’s new wife Mary (Muriel Steinbeck) begs him not to, especially since they have a new baby boy. The flight is a great success – the first crossing of the Pacific in a single-engine aeroplane.