An animated adventure following the Seventh Doctor as he attempts to stop General Tannis' plans for conquest of the universe.

Where the Fourth Doctor left off, the Eighth Doctor comes to finish the job. With Romana and K9 by his side, they have to stop the evil Skagra. A remounted version of the abandoned Fourth Doctor serial, rewritten to feature the Eighth Doctor and fit in with the Big Finish audio drama continuity.

The Doctor and his companion Evelyn investigate a series of mysterious disappearances on the planet Chronos and once again encounter the dangerous Cybermen.