Lum, Ataru, Shinobu and Mendo are invited to a small island where Mr Fujinami and Ryunnosuke have relocated and reopened their Hama Tea Shop.Once there, Fujinami explains that he purchased the shop from an old family friend, who disappeared along with his daughter, Nagisa. One evening, the group are scared by a pair of ghosts, who turn out to be the spirits of Fujinami's friend and his daughter.The two ghosts explain that they were trying to make a new dish using sea urchin, but due to poisoning, both died. It is also revealed that the friend's daughter Nagisa, was to become Ryunnosuke's wife.Ryunnosuke refuses, and confesses to her Father's friend that she cannot wed Nagisa, since she isn't a boy, but a girl. Strangely enough, this does not deter the friend or Fujinami from trying to get them together. Though the fact that she is a ghost is soon changed when a sea urchin comes ashore, and sheds a tear. Nagisa swallows the tear, and becomes human again.Meanwhile, the others have noted