A world where Worf took Alexander to the Klingon Kot'baval festival in hopes of inspiring his son's warrior spirit.
Maranga IV is a planet with a Klingon outpost that hosts the Kot'baval festival, a celebration that reenacts events from Klingon legend. Picard suggests to Worf that the festival might stir Alexander's interest in his heritage.
In Firstborn, Worf and Alexander attend the festival, and Alexander enjoys it. That night, they are attacked by Klingons and saved by the mysterious K'mtar, who claims to be an adviser to the House of Mogh.