After arriving into the system, sut pretended to be a simple explorer and dipaced his best sent, Devna, to gather intelligence. After they learned all they could, they kidnap several Deltan citizens and the Rimula-Bero escaped the star system.
Following a call for help by the Deltan government, the USS Essex intercepted the Rimula-Bero, and after a short firefight Sut surrendered. The Starfleet crew retrieved the Deltans and left the Rimula-Bero behind as the Deltans decided not to press charges. (ENT - Rise of the Federation novel: Uncertain Logic)