The crew of HMS Camden Lock start negotiations with various alien civilisations to sell blocks of the Peterborough Enterprise Zone. When things fail the first time, Space Force demands that Commander Henderson and his crew have to find another buyer within a week. The task doesn't get easier with an alien killer machine on board and the navigation system dropping out.

Henderson, miffed at being usurped by the Americans negotiating peace between two alien races, takes matters into his own hands with explosive consequences.

The crew of HMS Camden Lock are subjected to an extremely strict assessment test causing Henderson to seek the solitude of his cabin leaving York in command.

The daughter of the Space Admiral has run away avoiding university and Henderson is ordered to get her back. Meanwhile both Vine and Jeffers have taken a shine to the young student and fight for her heart in the only way they know how - a duel. Arabella steals a shuttle craft and elopes with Jeffers leading them both into mortal danger.

York is sacked from Space Force after footage of him beating up an innocent alien ends up on the news. Teal is delighted to be left in charge of the ship in the officer's absence - but she faces a tough challenge when the team discover the Red Shiny Robots of Vortis are about to attack.

The crew discover the Dreamgate, one of the most dangerous devices in the Universe, which gives its owner the power to infiltrate other people's dreams without their knowledge. Henderson and York wander into Vine's dream of a pub in the mid 1990s...

Entrusted with leading the convoy guarding Britain's new super-weapon, the Camden Lock's position is betrayed. There is a traitor aboard and all the officers are under suspicion. There is a desperate race against time to find the mole before Earth is destroyed.