A globetrotting consultant comes to Hong Kong to see a girl he met briefly a month ago. He follows her instructions, checking into a particular hotel and a particular room on a particular day, waiting for her to show him the most memorable sunset as she had promised. Yet he can no longer remember her face. However the sun does not set that day, nor does it set for the next one hundred days. He starts to pray. The sun finally sets. Darkness descends. Energy rationing begins. In total darkness, a girl gets into his bed. Is it her?