Sparv toiled at the Port Tarkin forced labor camp, located on Phelarion.
At the Port Tarkin forced labor camp on Phelarion, Sparv and his fellow worker Calus were employed. Their task was the harvesting of the volatile megonite moss for Thalassa Tarkin, the camp's owner. A scheme was hatched by Sparv and Calus: to break free from Port Tarkin and secretly transport a quantity of megonite moss sufficient to generate a considerable sum of money. Calus, having a long-standing friendship with Han Solo, intended for the smuggler to collect them and their illicit cargo. Princess Leia Organa, after observing their detonation of a small quantity of moss, found herself following them into the labor camp after her Gossamer glider suffered a crash landing on Phelarion.
Later that evening, during dinner, Leia overheard their discussion regarding the stolen moss and proceeded to tail them as they exited the mess hall. Sparv and Calus faced the challenge of reaching a transponder to communicate with Han for extraction. Upon discovering Leia eavesdropping on their conversation, she offered her assistance, stating she could access a transponder and transmit their message. While Leia departed to send the message, Sparv and Calus went to inspect the megonite. They overcame a passing stormtrooper near the cave containing the megonite, but this left them concerned about the potential arrival of reinforcements.
Darth Vader, Thalassa Tarkin, Leia, accompanied by some Stormtroopers, arrived to investigate. Upon their arrival, Leia initiated an escape attempt alongside Sparv and Calus. Vader spotted their escape and dispatched the stormtroopers in pursuit. They managed to reach the cave's exit, taking an elevator to the surface where Han Solo retrieved the trio.