Legendary inventor Clive Sinclair battles it out with ex-employee Chris Curry, founder of Acorn Computers, for dominance in the fledgling market.

The rivalry comes to a head when the BBC announce their Computer Literacy Project, with the stated aim of putting a micro in every school in Britain. When Acorn wins the contract, Sinclair is furious, and determines to outsell the BBC Micro with his ZX Spectrum micro.