The New Teen Titans, Vol. 1

Changeling and Cyborg receive a message from Changeling’s Doom Patrol ex-partner, Robotman, currently searching for Steve Dayton who is in turn searching for the killers of the Doom Patrol. Meanwhile, Cyborg’s friend Sarah Simms is kidnapped by the Terminator. Terminator fights an inconclusive battle against Starfire, and then attempts to auction off plans to a Dayton Industries secret research project code-named Promethium, a self-regenerating energy-source. Using Sarah as a hostage, Terminator forces the Titans to act as guinea-pigs in a test of the Promethium explosive for officials of the H.I.V.E. The Titans escape to battle Terminator and his mercenary army, but when Changeling pursues the escaping assassin alone, he is mortally wounded as Terminator escapes.