A criminal subculture operates among U.S. soldiers stationed in West Germany just before the fall of the Berlin wall.

Romulans. They are surpassed in dangerousness only by the Borg – cyborgs of different races from the Delta Quadrant. The Tal Shiar, a Romulan secret service, manages to integrate a Borg transwarp drive into the IRS Rihan. The necessary technical information comes from the memory of a single surviving Borg – it is the former Captain Edwards. There is a fateful meeting of the Rihan and the USS Angström. To escape discovery, the Romulans destroy the research vessel. At the same time, the Federation’s own Transwarp prototype is operational – the USS Yorktown. Commanding the test flights is Captain Christopher Riker. He brings some former USS Missouri officers on board and assembles a team of top-class specialists. Riker’s former Captain Edwards will do his utmost to destroy him …