Dylan and Molly get their first mobile phones and immediately they both ring at the same time. When they answer, a Mystery Man (known as Future TX) says he's calling from the future and needs their help. Like, right now. To save the world!
| Actor | Role |
|---|---|
| AArran KempDylan | Dylan |
 Griff Rhys JonesFoley | Foley |
 Doug CockleDylan's Dad | Dylan's Dad |
| AAdele CongreveMolly | Molly |
 Catriona KnoxSaffron, Molly's Mum | Saffron, Molly's Mum |
 Christos LawtonMysterious Dude | Mysterious Dude |
| NNicole FaradayDylan's Mum | Dylan's Mum |
| KKevin HudsonThe Guard | The Guard |
| MMabel RoxburghSchool pupil | School pupil |
| MMax RoxburghSchool pupil | School pupil |
| AAlexa LewisSchool pupil | School pupil |