Gabe begins by describing the first Syphon Filter investigation. He and Lian went to Costa Rica to find missing Agent Ellis. When they arrive, the two see that Erich Rhoemer has ordered Ellis killed, but Gabe must continue his mission and identify what Rhoemer was doing at the drug plantation. Gabe chases Rhoemer onto an airplane despite his Agency superior Edward Benton denying him permission. Gabe did not know back then that Benton and the Agency controlled Rhoemer, who escaped from the plane.