Episodes
| Episode | First Broadcast | Repeated | Comments |
|---|---|---|---|
| 01 | 20081102 | 20110619 (BBC7) 20120324 (BBC7) 20120325 (BBC7) 20121110 (BBC7) 20121111 (BBC7) 20130623 (BBC7) 20150405 (BBC7) | In the aftermath of a nuclear war, a radioactive cloud is moving slowly towards Australia. |
| 02 | 20081109 | 20110626 (BBC7) 20120331 (BBC7) 20121117 (BBC7) 20121118 (BBC7) 20130630 (BBC7) 20150412 (BBC7) | As the radioactive cloud approaches Australia, a desperate submarine mission is launched. |