Eugene Jones wakes up, finding himself lying on the middle of a road. He then discovers that he has been the victim of a hit-and-run incident, and is, now, not only dead, but invisible. Eugene recalls events leading up to his death, involving a mysterious alien eye. Simultaneously, Gwen investigates the suspicious circumstances around his fatality.

Captain Jack returns, as the Torchwood team reunite to fight a rogue Time Agent. The mysterious Captain John Hart is determined to wreak havoc, and needs to find something hidden on Earth. But with Gwen's life in danger, and cluster bombs scattered across the city, whose side is Jack on?

Jack calls in an old friend for a favour, none other than Martha Jones, as they attempt to stop a pharmaceutical facility that uses aliens in the hope of discovering a cure for all diseases.

An old cinema reopens and mysterious horrors of the past return to Cardiff. Why are people trapped between life and death, questions are asked about the Night Travellers, and what Torchwood can do to stop them.

As the team are knocked unconscious we find out how Jack, Toshiko, Ianto and Owen were initiated into Torchwood.