The clash known as the Comet Run Day Battle transpired between the Tusken Raiders and the Settlers' Call Fund group led by farmer Orrin Gault. The Tusken chieftain A'Yark, under the misapprehension that businesswoman Annileen Calwell possessed Force-sensitive abilities as an Airshaper, sought to abduct her from her place of business, Dannar's Claim. The Tusken's efforts, however, were met with resistance from local settlers, including Obi-Wan Kenobi in disguise.
After suffering losses, the Tuskens were compelled to withdraw when Annileen activated the Settler's Call transmitter. A'Yark and her warriors sought refuge in Hanter's Gorge with the goal of reaching their camp situated in the Pillars. However, Gault's settlers surrounded them, resulting in the deaths of numerous Tuskens, including A'Yark's youngest son, A'Deen. Kenobi persuaded A'Yark and the surviving Tuskens to flee. Gault considered the Comic Run Day Battle a triumph, leveraging it to attract more settlers to subscribe to his Settlers' Call Fund.
In the years preceding the Great Jedi Purge, tensions escalated between settlers and the native Tusken Raiders of Tatooine, prompting farmer and entrepreneur Orrin Gault to establish the Settlers' Call Fund. This militia utilized sirens to alert settlers of Tusken raids and mobilize reinforcements. The Fund, in reality, functioned as a protection racket orchestrated by Gault to settle debts owed to the Hutt crime lord Jabba, debts incurred from a failed venture in moisture vaporators. While some Tusken attacks were genuine, Gault, along with his children Mullen, Veeka, and farmhand Zedd Grobbo, orchestrated false attacks to entice more farmers to enlist in the Fund.
Annileen Calwell, a businesswoman and widow, operated a convenience store named Dannar's Claim in the Pika Oasis. Calwell managed the store alongside her two adolescent children, Kallie and Jabe Calwell. She also raised several dewbacks within a corral. When Kallie was riding a young dewback named Snit, the creature escaped the corral, taking the unwilling Kallie on a ride into the Jundland Wastes, the territory of the female Tusken chieftain A'Yark ("Plug Eye").
Annileen pursued Snit and Kallie on her dewback Vilas. During the pursuit, Annileen successfully boarded Snit and attempted to regain control of the unruly creature. They were joined by a human man known as Ben Kenobi, who rode his eopie Rooh. "Ben" managed to persuade Annileen to hand Kallie over to him. As the chase continued, Snit stumbled into a hole, nearly falling on Annileen. "Ben" employed his Force abilities to suspend the dewback in mid-air, preventing Annileen from being crushed. Ben, Annileen, and Kallie subsequently fled the area before a sarlacc could devour Snit.
Unbeknownst to the humans, A'Yark had been observing them. Mistaking Annileen for a Force-sensitive Airshaper akin to the Jedi Sharad Hett, A'Yark convened a war council among her clan. She convinced them to abduct Annileen with the intention of harnessing her Force powers. H'Raak, the sole dissenter, was executed by A'Yark's son, A'Deen.
Proceeding with A'Yark's strategy, her clan launched an assault on Dannar's Claim during the Comet Run race, when most settlers were away. The Tuskens injured the Rodian Bohmer and killed a Devaronian investor named Jervett. However, they were driven back by several armed settlers, including Orrin, Kenobi, and Wyle Ulbreck, who used their blasters to kill several Tusken Raiders. Annileen successfully activated the Settlers' Call beacon, which emitted the recorded roar of a krayt dragon, frightening the Tuskens and summoning armed settlers.
Following the retreat of A'Yark and her surviving warriors, Wyle Ulbreck and the remaining Devaronian investors criticized Orrin for the alleged shortcomings of his Settlers' Call warning system. Gault disagreed, asserting that the Settlers' Call had successfully scared the Tuskens and summoned reinforcements. As reinforcements gathered from nearby farms and settlements, Orrin rallied the militia for a retaliatory strike against the Tuskens. Orrin also received information indicating that the Tuskens were heading towards Hanter's Gorge, a location surrounded by a high canyon. Jabe joined Orrin's posse, much to his mother Annileen's dismay. She and Kenobi pursued Orrin's posse on a speeder bike.
A'Yark and her Tusken warriors entered Hanter's Gorge, intending to reach the Pillars, but were unable to scale the canyon walls. Recognizing that the Tuskens were trapped, Orrin and his posse blocked the Tuskens' escape route from behind, while several settlers, including Jabe and Veeka, fired upon the Tuskens from an escarpment above the gorge. Meanwhile, Kenobi and Annileen observed the massacre from the western side of the gorge. Despite the death of her husband Dannar Calwell at the hands of the Tuskens and the earlier attack on Dannar's Claim, Annileen was horrified by what she considered a one-sided slaughter, after Kenobi convinced her that the Tuskens were living beings.
Before Annileen and Kenobi could leave the gorge, they were attacked by A'Deen. Before Annileen could shoot A'Deen, the Tusken was killed by a long-distance blaster shot. Approaching the fallen Tusken, Annileen realized that the warrior was about Jabe's age. Encountering A'Yark and her seven remaining Tusken warriors, Kenobi proposed a diplomatic resolution. As a gesture of peace, Ben placed A'Deen's gaderffii stick on the ground. When A'Yark grieved over her son, Annileen and Kenobi realized that she was the Tusken boy's mother.
Through conversation, Kenobi learned that A'Yark was acquainted with Sharad Hett, a Jedi Master who had integrated into a Tusken clan. In return, A'Yark discovered that Annileen was not the Force-sensitive Airshaper, but that Kenobi had used his Force powers to save her from being crushed by the dewback in the desert. Kenobi persuaded A'Yark that both sides had shed enough blood and that the Tuskens should escape while they still could.
Following the events of the Comet Run Day Battle, Orrin and his posse celebrated the killing of 48 Tuskens as revenge for previous Tusken attacks that resulted in the deaths of his son Varan Gault, Dannar Calwell, and Shmi. He capitalized on the massacre to recruit eight new subscribers to his Settlers' Fund Call. However, Gault remained heavily indebted to Jabba, and his vaporator formula was unappealing and unprofitable. Jabba's Gossam enforcer Bojo Boopa later visited the Pika Outpost to warn Gault that he was falling behind on his payments.
Driven by desperation, Gault proceeded with his plan to marry Annileen. Prior to his proposal, he gifted her and her children a brand new JG-8 luxury landspeeder, which awaited them at Mos Eisley's Delroix Speeders. While the Calwells were outstation, Orrin secretly copied Annileen's financial records and title deed. Believing he could settle the debt by using Annileen's assets as collateral, Orrin also traveled to Mos Eisley to meet with his bankers and Jabba's manager Mosep Binneed. Mosep was displeased with Orrin's late loan repayment and ordered his minions to torture him.
However, Kenobi freed Orrin, helping him escape Mosep and his henchmen. Mosep agreed to grant Orrin another day to settle his debts. In desperation, Orrin proceeded with his second plan, staging a false flag attack against the Ulbreck's farm. For this raid, Orrin recruited his children and Annileen's son Jabe. However, the raiders were repelled by Kenobi, and Jabe was captured by A'Yark. Kenobi leveraged his friendship with A'Yark to secure Jabe's freedom in exchange for a baby eopie.
With his plans unraveling, Orrin attempted to persuade Annileen to marry him to gain access to her assets. However, she refused and subsequently learned from Jabe and Kenobi about Orrin's financial troubles and false flag attacks. To conceal his involvement in the attacks, Orrin claimed that Kenobi was colluding with the Tuskens and organized a manhunt against the fugitive Jedi. With Annileen's assistance, summoning Mosep and Jabba's enforcers, Kenobi exposed Orrin's unscrupulous activities to the settlers, who turned against him. Orrin attempted to hunt down and kill Kenobi, Annileen, and A'Yark, but was instead crippled after his landspeeder crashed into the gorge. The crippled Orrin was taken prisoner by A'Yark, who forced him to operate a moisture vaporator.
The Comet Run Day Battle was first mentioned and named in John Jackson Miller's 2013 Legends novel Kenobi.