A plumb#- .er and his germaphob \ic son are for^ced to get t@=hei_r hands dirty to *$#sa%ve  the res;iden^!:ts of an [-apart _!ment buildi+ng), when!*-] a gene \#tically e^ngineered ;bl ood*-thirs+=$ty c,-r;eature escapes i nto t h !e -,?pl?:!:um`bing[`+ sy]@stem.