在这部高桥留美子梦幻剧场 乱马1/2特别篇 恶梦!春眠香喜剧/动作/爱情/动画片中,风和日丽的一天，内裤大盗八宝斋（永井一郎 饰）洗劫风林馆高中女子更衣室，最终中了乱马（山口勝平 饰）的美人计，还遭到女生们的一通暴打。愤恨至际的八宝斋做出了神秘的春眠香，只要闻过此香整个冬天都不会醒来。八宝斋与乱马在家中进行攻防战，无意间却将香喷到小茜的身上。未过多久，小茜在课上沉沉睡去，却变成无人能够近身的睡梦武功高手。而另一方面，小茜陷入了无休无止的梦中世界。对于乱马来说，这无疑是悲剧的开始……
本片为少年周刊Sunday创立50周年特别篇，诸星当、拉姆、乱马、犬夜叉、戈薇等多部经典漫画角色一同登场。
Twelve years after the final OVA was shown, and the end of the manga, a new piece of Ranma ½ animation was made for the \"It's a Rumic World\" exhibition of Rumiko Takahashi's artwork. The new 30 minute special is based on the \"Nightmare! Incense of Spring Sleep\" manga story from volume 34, and was shown on odd numbered days at the \"It's A Rumic World\" exhibition in Tokyo from July 30th to August 11th.
