一位海洋科学家自愿和其家人居住在原型水下房屋中，以证明其实用性。

简介：MarinescientistFredMillerdesignstheworld'sfirstunderwaterhome,butwhenthebusinessmagnatefundinghisworkthreatenstoendtheproject,Millervolunteerstoliveinitwithhisownfamilytoproveit'spractical.Theunderwaterclanincludeshiswater-phobicwifeandhisdaughterandson,whoarepartofarockandrollband.Theybringalongtheleadsingeranddrummer.Alongtheway,theyhavetocontendwithacompetingengineerwhopromisestominetheoceanfloorforthebusinessman.ArecordproducerlikestheirmusicandbooksthemonTV,leadingthekidstotrytoescapetothesurface.