The series takes place in a small Russian town where a deadly virus appears. Most of the inhabitants die, only a few people remain alive, who are affected by sleeping sickness: people cannot wake up on their own, and after two hours of sleep they fall into a coma.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Fourth Horseman | 1975-04-16 | 50 min |
| Season 1 | Episode 2 | Genesis | 1975-04-23 | 50 min |
| Season 1 | Episode 3 | Gone Away | 1975-04-30 | 50 min |
| Season 1 | Episode 4 | Corn Dolly | 1975-05-07 | 50 min |
| Season 1 | Episode 5 | Gone to the Angels | 1975-05-14 | 50 min |
| Season 1 | Episode 6 | Garland's War | 1975-05-21 | 50 min |
| Season 1 | Episode 7 | Starvation | 1975-06-04 | 50 min |
| Season 1 | Episode 8 | Spoil of War | 1975-06-11 | 50 min |
| Season 1 | Episode 9 | Law and Order | 1975-06-18 | 50 min |
| Season 1 | Episode 10 | The Future Hour | 1975-06-25 | 50 min |
| Season 1 | Episode 11 | Revenge | 1975-07-02 | 50 min |
| Season 1 | Episode 12 | Something of Value | 1975-07-09 | 50 min |
| Season 1 | Episode 13 | A Beginning | 1975-07-16 | 50 min |
| Season 2 | Episode 1 | Birth of A Hope | 1976-03-31 | 50 min |
| Season 2 | Episode 2 | Greater Love | 1976-04-07 | 50 min |
| Season 2 | Episode 3 | Lights of London (1) | 1976-04-14 | 50 min |
| Season 2 | Episode 4 | Lights of London (2) | 1976-04-21 | 50 min |
| Season 2 | Episode 5 | The Face of the Tiger | 1976-04-28 | 50 min |
| Season 2 | Episode 6 | The Witch | 1976-05-05 | 50 min |
| Season 2 | Episode 7 | A Friend in Need | 1976-05-12 | 50 min |
| Season 2 | Episode 8 | By Bread Alone | 1976-05-19 | 50 min |
| Season 2 | Episode 9 | The Chosen | 1976-05-26 | 50 min |
| Season 2 | Episode 10 | Parasites | 1976-06-02 | 50 min |
| Season 2 | Episode 11 | New Arrivals | 1976-06-09 | 50 min |
| Season 2 | Episode 12 | Over the Hills | 1976-06-16 | 50 min |
| Season 2 | Episode 13 | New World | 1976-06-23 | 50 min |
| Season 3 | Episode 1 | Manhunt | 1977-03-16 | 50 min |
| Season 3 | Episode 2 | A Little Learning | 1977-03-23 | 50 min |
| Season 3 | Episode 3 | Law of the Jungle | 1977-03-30 | 50 min |
| Season 3 | Episode 4 | Mad Dog | 1977-04-06 | 50 min |
| Season 3 | Episode 5 | Bridgehead | 1977-04-13 | 50 min |
| Season 3 | Episode 6 | Reunion | 1977-04-20 | 50 min |
| Season 3 | Episode 7 | The Peacemaker | 1977-04-27 | 50 min |
| Season 3 | Episode 8 | Sparks | 1977-05-04 | 50 min |
| Season 3 | Episode 9 | The Enemy | 1977-05-11 | 50 min |
| Season 3 | Episode 10 | The Last Laugh | 1977-05-18 | 50 min |
| Season 3 | Episode 11 | Long Live the King | 1977-06-01 | 50 min |
| Season 3 | Episode 12 | Power | 1977-06-08 | 50 min |
