2374: The planet Bynaus has always been a haven of order in a chaotic universe. Its inhabitants, the Bynars, live in harmony with computers, functioning in binary pairs to keep their society alive. Two Starfleet officers arrive in an attempt to recruit Bynars for the Starfleet Corps of Engineers – but when one of the potential recruits is found dead, it's up to Citizen Services investigators 110 and 111 to determine the cause of death. But their investigation will lead them to a startling revelation that will rock Bynaus to its very core!