Four participants sign up for a mysterious medical test.
| Actor | Role |
|---|---|
 Brandon AuretWilliam Hunter | William Hunter |
| CClive GilsonColin Norton | Colin Norton |
 Craig HawksReece | Reece |
| CChristien Le RouxMegan Donovan | Megan Donovan |
| RRyan MacquetJake Butler | Jake Butler |
 Nic RasentiBriggs | Briggs |
| IIngeborg RiedmaierSamantha Foxx | Samantha Foxx |