Helen, a priest, is approached by scientist Lisbeth with a desperate plea for help. A young man, who has been sent to a high security psychiatric ward after having killed an old couple, has attempted suicide while rambling about God. Having been part of an experiment attempting to humanize inmates by assigning them pets, the young man has suddenly gone ballistic. Fearing that he will attempt suicide again priest and scientist must now confront their mutual animosities while trying to grasp the truth. In a race against time the two women begin a shocking journey deeper and deeper into the sick mind of a young man's soul.

某座医院内，小男孩艾尔弗莱德（Pelle Falk Krusbæk 饰）从睡梦中醒来，眼前是第一天来医院工作的清洁工恩佐（Casper Crump 饰）。恩佐笨手笨脚，为吵醒男孩感到抱歉，他们似乎对飞艇玩具有着共同的爱好，这成为他们友谊的开端。晴朗的日子里，两人在花园内再度相逢，艾尔弗莱德聊起了自己的病情，他不久于人世，但预感天堂也许会很无聊。面对这个淡定迎接死亡的男孩，恩佐内心百感交集。第三次相逢，恩佐为男孩讲述关于氦气的事情，氦气能够帮助飞艇飞行，在天空的顶端，飞艇吊着不同的小岛，男孩可以在上面尽情玩耍。
这是生命尽头，最后的幻想……