Eccentric scientific genius Dr. Who activates the T.A.R.D.I.S., a remarkable time machine disguised as an ordinary callbox. But when the Doctor, his granddaughters and their friend Ian are transported to the mysterious planet Skaro, they discover a race of innocent humanoids under siege by evil robot-like Daleks. Can the Doctor protect this peaceful society from destruction as well as save the entire universe from a diabolical invasion of the future?