Queen Trios' of Shu-Torun possessed a starship. Following her communication with the Sith Lord Darth Vader, revealing the location of the recently assembled rebel fleet, she returned to her vessel. This occurred during a celebration aboard the Mako-To Base for the Alliance's fleet, where she attempted to escape. After the unsuccessful launches of rebel groups, Princess Leia Organa instructed General Davits Draven to dispatch security teams to Trios' ship with the aim of locating an override that could initiate the movement of the cruisers.
Following the arrival of Death Squadron under Vader's command and the annihilation of General Vanden Willard's flagship, Yavin's Hope, Organa and Colonel Bandwin Cor, along with a contingent of rebel troopers, boarded Trios' ship in pursuit of the override. This led to an exchange of fire with Trios' soldiers.