A Florida real estate developer and her captain lure investors to a property in the Everglades called Dreamland Shores, under false pretenses that the swampland will soon be developed. After the group arrives on a small island, they find it has been overrun by giant mutated ants, brought on by the dumping of toxic waste in the area.
| Actor | Role |
|---|---|
 Joan CollinsMarilyn Fryser | Marilyn Fryser |
 Robert LansingDan Stokely | Dan Stokely |
 John David CarsonJoe Morrison | Joe Morrison |
 Albert SalmiSheriff Art Kincade | Sheriff Art Kincade |
 Jacqueline ScottMargaret Ellis | Margaret Ellis |
 Pamela Susan ShoopCoreen Bradford | Coreen Bradford |
 Robert PineLarry Graham | Larry Graham |
 Edward PowerCharlie Pearson | Charlie Pearson |
| BBrooke PalanceChristine Graham | Christine Graham |
 Tom FaddenSam Russell | Sam Russell |
 Irene TedrowVelma Thompson | Velma Thompson |
 Harry HolcombeHarry Thompson | Harry Thompson |
 Jack KosslynThomas Lawson | Thomas Lawson |
| IIlse EarlMary Lawson | Mary Lawson |
| JJanie GavinGinny | Ginny |
| NNorman FranklinAnson Parker | Anson Parker |
 Florance McGeePhoebe Russell | Phoebe Russell |
| JJim WheelusCrewman | Crewman |
| MMike ArmstrongJim | Jim |
| TTom FordPete | Pete |
| CCharles ReddTaxi Driver | Taxi Driver |