滇军第九旅旅长范天喜骁勇善战，行事荒诞不经。蒋介石的中央军剿共，急需滇军支持，范天喜借故以荒唐行为对抗上级剿共的命令，他的行为导致中央军失利，中央军将罪责推至滇军头上，并索要范天喜的项上人头。滇军总司令龙云不愿滇军成为蒋介石剿共的工具，决定牺牲范天喜给蒋介石赔罪。而蒋介石方面的徐远东等人也仍然坚信范天喜就是共党奸细，他…

Eight friends, all in a stable relationship, decide to venture into a game of sexual discovery by exchanging couples while trying to free themselves from their daily routine and add a spicy touch to their love life.