The Doctor is taken "out of time" by the Time Lords and made to face an enquiry into his meddling in the affairs of others, overseen by the Inquisitor. The prosecutor, the Valeyard, soon has the proceedings upgraded to a trial for the Doctor's life. Evidence takes the form of recordings of the Doctor's recent adventures, beginning with his visit to the mysterious world of Ravalox and an encounter with Andromedan space pirates...

At the Holby Docks, a drum of toxic gas falls on two dockers - one dies and the other suffers a badly burnt leg. Other workers are also poisoned and the team try to identify the substance. Duffy advises a young girl, Sophie, to drink milk after drinking car fluid from her fathers garage. A stubborn man, being treated by Charlie after being hit on the head with a golf ball, is not happy with his treatment and says he will complain to Charlie's boss.