One by one, the earlier four incarnations of the Doctor are being plucked out of the space-time continuum, and placed into the dreaded Death Zone. Originally used by the Time Lords for organizing gladiatorial matches between various races, Rassilon closed the Death Zone, and forbade the use of the Time Scoop. So, who is doing this, and more importantly, why? It's up to the Doctor (all of them) to figure it out.
This movie is a "Who-ite's" dream. Four of the five Doctors are present, with Richard Hurndall performing very well as the formidable first Doctor. Many companions appear, including Turlough, Tegan, Susan (the Doctor's Granddaughter), Sarah Jane, the Brigadier, Mike Yates, Liz Shaw, Jamie, Zoe, and K-9. Plus, of course, the Master (played by Anthony Ainley). It is a shame that Tom Baker refused to be involved in this production, but he is reasonably represented by scenes taken from the never-completed episode Shada.
I recommend this movie absolutely to any fan of Doctor Who.