On Holly's advice, Lister joins the "Canaries". He thinks it is the prison choir, actually it is a battle-hardened convict army, trained to go on suicide missions. And he's also enrolled Rimmer, probably the yellowest of yellowbellies in the whole universe. On their first mission, Rimmer meets Cassandra (Geraldine McEwan), a computer with the ability to predict the future with 100 per cent accuracy, which prophecies his imminent death.