Earth-bound, Captain Johner and Zarz wonder about the Alien-bound ship... On that ship, the human "ambassadors" are bottled up and stir-crazy. The only calm guy is Ric, who has hypersensitive nerves for hypatomic maintenance. They venture out and Bul explains how their motors work - as the sub-space drive overloads! Ric is stranded in sub-space, a bewildering rainbow of colors. Only with hyper-nerves can he trace the vibrations and colors to shut off the motors - even passing through solid bulkheads. The Aliens were helpless. "Credit it to a case of nerves!"