Follows20-year-oldDrea,whoreluctantlytakesajobbabysittingfora rofessorofacollegesheho estoattend.Strugglingtoentertainthe rofessor'schildrenTrissyandJake,alongwithherownlittlebrotherPhilli ,Dreatakesthemonahike,unawarethatmysteriousaliencrittershavecrash-landedandstarteddevouringeverylivingthingtheyencounter < style="text-align:center;"> < style="text-align:center;">