每天入夜,当春日部的居民们酣然入睡之后,他们都会来到一个神奇而又美丽的梦中世界中。在那里,他们可以实现一切想要实现的愿望,满足一切渴望满足的要求,这个梦中的世界充满了快乐和幸福。 某日,一个名为贯庭玉崎的女孩跟父母一起搬来了春日部市,成为了这个城市中的新的一份子。然而,从那一天开始,大家就再也没有做过美梦了。那个曾经温暖的梦中世界,如今充满了痛苦、悲哀和恐惧,而梦境中的灾难亦渐渐延续到了现实之中。这一切的发生,显然和玉崎有着脱不清的干系。为了弄清事件的真相,小新(矢岛晶子 配音)联手风间(真柴摩利 配音)和妮妮(林玉绪 配音)等小伙伴们展开了调查。During his sleep, Shinnosuke enters a fantasy world where he could find all his favorite things, starting from chocolates, cakes and candies to young and beautiful girls in voluptuous and salacious clothes. But it soon turns out to be a nightmare world where Shinnosuke, his friends and family get trapped and are unable to escape. They also meet a mysterious girl named Saki who is somehow connected to these dreams. Now it is up to Shinnosuke and the Kasukabe Defense Group to save their dreams and escape from the nightmare world.