When high schooler Taku Shimamura is whisked away to the strange realm of Slaffleaze, he uncovers a plot by the malevolent Zolba and his elite to conquer Earth, known to them as Capricorn. Teaming up with the downtrodden Slaffleaze citizens, Taku must thwart Zolba's sinister schemes before Earth falls prey. To succeed, he must earn the trust and affection of the sole remaining Yappie, the ancient protectors of Slaffeaze. But this challenge demands more than mere bravery; the final Yappie isn't just a charming girl but also a formidable dragon.