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.。塔西(赞达亚饰)曾是网球奇才,后来转为教练,在场上和场下都有股不容忽视的强大力量。她的丈夫阿特(迈克·费斯特饰)曾经拿下冠军但后来屡次连败,正当她计划为他挽救劣势时,发生了出乎意料的转折;她的丈夫对上了过气的帕特里克(乔什·奥康纳饰),他曾是塔西的前男友, 同时也是她丈夫过往的死党。随着他们的过去与现在互相冲击,紧张局势随之升高,塔西必须自问,为了获胜需要付出何种代价。。