The distant-future home of Craft, a soldier in a long war against the V'draysh, who longed to return there throughout the Short Treks episode Calypso.
Alcor IV is the home planet of Craft, the only living character in the Short Treks episode Calypso. The story is set in a far future, long after the USS Discovery was left empty at a fixed position in space with its computer, which has grown into the personality called Zora.
Craft tells Zora that Alcor IV has been at war with the V'draysh for ten years. He left behind a wife and a child he has hardly seen, and he reached Discovery in an escape pod taken from the enemy.
The planet is never shown. Zora nurses Craft back to health and the two grow close, but she sees that his thoughts are always on Alcor IV and finally gives him a shuttle, which he names Funny Face, for the long journey home.