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...
有着人类少女的样貌，却不同于人类的存在――精灵。 她们拥有强大的能力，从邻界现身时，因为会伴随名为『空间震』的灾难，她们甚至被称为人类的天敌。 面对精灵的威胁，人类能采取的手段，是以武力歼灭，或是―― 『与精灵约会，使其娇羞』！ 五河士道能通过让精灵娇羞并亲吻精灵来封印她们的灵力。 靠着这个特异能力持续拯救人类及精灵们的士道身边，有股巨大波涛即将袭击而来。 身为世界屈指可数的巨大企业且想获得精灵力量的DEM社，为了夺取士道的性命，将大举来袭。 于是，士道记忆深处里的神秘少女现出原形―― 各种想法错综复杂，史上最大的战争即将开始。
