改编自春场葱的同名漫画，故事讲述13年前怪人大军入侵地球的故事。怪人与守护地球的战队组织龙神守望者正面交锋，虽然他们几乎每周都会发起战斗，然而，真相与表面所见并不相同。事实上，怪人在1年之内就被打败了，守望者们却强迫他们在许多崇拜龙神战队的市民面前打假赛，而厌倦了欺辱的怪人决定做出改变，潜入战队中从内部打倒他们。
After discovering their troop is in danger of disbanding, Snoopy and the Beagle Scouts set off to immerse themselves in nature and the great outdoors to earn their badges, with the Beagle Scout Manual as their guide. Meanwhile, Charlie Brown and friends enjoy their summer at Camp Spring Lake, crossing paths with Snoopy as they experience hiking, swimming, sitting around campfir...
贫苦的侦探镝矢惣助，遇到了操纵魔法的异世界皇女莎拉。惣助开始了与莎拉的同居生活，莎拉很快就习惯了现代日本。另一方面，在莎拉之后被转移的女骑士莉薇亚，在流浪的同时，过着令人惊喜的生活。向前稳定生活的两个异世界人，不仅影响了惣助，也影响了鬼畜律师、分手公司工作员、宗教人士与住在这区的怪人们……
