When a daring mission leads a deep sea submarine team into a mysterious opening on the ocean floor, they uncover a lost underwater world and awaken its ancient race of otherworldly beings.
| Actor | Role |
|---|---|
 Derek NelsonJim Peters | Jim Peters |
 Makenna GuylerChristine Harris | Christine Harris |
 Rory WiltonHank O'Connell | Hank O'Connell |
 Kane SurryJoe Meeker | Joe Meeker |
 David LenikCameron | Cameron |
| RRowena BentleyJulia Goldstein | Julia Goldstein |
| LLisa GorginDoctor | Doctor |
 Tim CartwrightGordon Atkins | Gordon Atkins |
| CChris LinesJed Pickman | Jed Pickman |
 Scot ScurlockWalton Peters (voice) | Walton Peters (voice) |
| SSwainley Whipps Eden-EntwistleBoris | Boris |
| ZZoe SankeyUniversity Worker | University Worker |