It's 64,874,261.451 832 01 years behind Galactic Standard Time in outer space and Johnny is a long, long way from his children's home in Castle Dudbury New Town. In the last few days he has escaped the evil krun, found his sister, made friends on the galactic capital and even been able to create his own spaceship, the beautiful Spirit of London. But inadvertently, he has sent a giant asteroid careering in the direction of Earth and its primitive inhabitants. And even if he can save Earth and return to the present day to try and find his parents, there are the krun awaiting him at every turn...

The first adventure with the ultimate hero JOHNNY MACKINTOSH