The Doctor and a newly-regenerated Romana arrive on Skaro to find that the Daleks, locked in a war with the robotic Movellans, have returned to retrieve their buried creator Davros.

Following a triple professional hit a U.S. agent, Paul Sherman, arrives in Amsterdam to investigate a heroin smuggling ring. He finds a city rife with drugs and a police force unable or unwilling to do much about it. With his incognito female fellow agent, Maggie, the American is soon stirring things up.