Gear-up landing

The aircraft remained at circuit altitude while the crew performed the emergency procedures to reset the generators. [...] The crew reset the landing gear relay circuit breaker located on the pilot’s sub-panel and again attempted to lower the landing gear using the normal system, but were unsuccessful. [...] The crew briefed the passengers and advised them on the brace position for landing and the evacuation procedure once the aircraft came to a stop. [...] The aircraft flew the approach for Runway 28 with the flaps remaining in the “approach” setting. [...] As the aircraft flew over the threshold, the captain (PF) reduced both engines to idle, and the first officer moved the propeller levers to the feather position and the condition levers to cut-off.