A mischievous junior apprentice sister × a cool, unflappable senior apprentice sister × a cheerful, upbeat lovesick puppy × an unlucky merchant × a gentle, bookish big sister × a hot-tempered younger sister obsessed with her big sister × an upright martial arts fanatic × a pavilion master forced to put on a show = ? What kind of pasts do they all have? When danger strikes, the eight set out together. What sparks will fly when their paths collide...?