The starship Constellation is found in deep space, almost completely destroyed. The only person found aboard is Commodore Matt Decker, in a state of shock and only able to give minimal details of what happened. A gigantic ship/creature suddenly returns, well over ten times the size of the Federation vessels, capable of literally eating entire planets to replenish is colossal energy needs. Kirk is trapped on the unarmed Constellation, while Decker takes command of the Enterprise and plans to exact revenge on the huge alien vessel, no matter what the risk to Kirk's ship and crew.
