新学年开始,卫斯理认识了转校生林可可。另一边,卫教授从非洲归来,发觉宝甲不翼而飞,逼问之下得知是死对头龟仙人所为,但仙人却无法回忆起弃甲于何处。
可可乃天魔转生,为探求宝甲下落,不惜吸取表姐香香的思想,不料却把香香对卫斯理的爱慕之情也吸收过来,渐渐产生爱意。。Marine scientist Fred Miller designs the world's first underwater home, but when the business magnate funding his work threatens to end the project, Miller volunteers to live in it with his own family to prove it's practical. The underwater clan includes his water-phobic wife and his daughter and son, who are part of a rock and roll band. They bring along the lead singer and drummer. Along the way, they have to contend with a competing engineer who promises to mine the ocean floor for the businessman. A record producer likes their music and books them on TV, leading the kids to try to escape to the surface.。