This story is collected in:

X-Wing Rogue Squadron Omnibus: Volume 2

• Issues 13, 14, 15 & 16:
  The squadron's roster has contained Corellian heroes and Alderaanian fighter aces, but when the royal court of Eiattu comes to reclaim their princess from the ranks of Rogue Squadron, it's a surprise to everyone: especially the princess!
  When the royal court of Eiattu came to Rogue Squadron to collect their princess -- Plourr Ilo, who was unaware of her heritage, they did so to help put an end to their planet's internal rebellion. They reasoned that a strong figurehead might pull the people together, what they couldn't know was that a strong-willed princess might have her own view of how things should be run.
  Crown, crown, who's got the crown? Plourr Ilo has reluctantly taken it on, but finds being a princess can be even rougher than being a warrior. Her brother instead wants to destroy the crown, not knowing that his own lover intends to claim, not only the crown, but the planet for herself! And as the different factions battle it out, the Empire waits in the wings, waiting to claim whatever remains. But standing in their way is the fabled Rogue Squadron and they've decided to take out the Empire, one TIE fighter at a time!
  This man making a bid for the throne of the Royal Citadel of Eiattu, this man who would lead the Peoples' Liberation Battalion to rule this world, claims to be the brother of the current ruler, Princess Plourr. But Plourr knows, with great certainty, that this cannot be. To reveal the truth might destroy his power, but it could, in turn, destroy her as well.

Synopsis taken from Dark Horse Comics, www.darkhorse.com.

Related Stories (in chronological order):

• Rogue Squadron 1/2 by Michael A. Stackpole et al.
• A New Hope
• The Empire Strikes Back
• Return of the Jedi
• The Truce at Bakura
• Lucky by Rob Williams et al.
• Rogue Leader by Haden Blackman et al.
• Rogue Squadron Special by Ryder Wyndham et al.
• The Rebel Opposition by Michael A. Stackpole et al.
• The Phantom Affair by Michael A. Stackpole et al.
• Battleground Tatooine by Michael A. Stackpole et al.
• The Warrior Princess
• Requiem for a Rogue by Michael A. Stackpole et al.
• In the Empire's Service by Michael A. Stackpole et al.
• The Making of Baron Fel by Michael A. Stackpole et al.
• Family Ties by Michael A. Stackpole et al.
• Masquerade by Michael A. Stackpole et al.
• Mandatory Retirement by Michael A. Stackpole et al.

The following novels are sequels to the above stories, and are set from 6 years after the Battle of Yavin during the period of The New Republic, in chronological order:

• Rogue Squadron by Michael A. Stackpole
• Wedge's Gamble by Michael A. Stackpole
• The Krytos Trap by Michael A. Stackpole
• The Bacta War by Michael A. Stackpole
• Wraith Squadron by Aaron Allston
• Iron Fist by Aaron Allston
• Solo Command by Aaron Allston
• Isard's Revenge by Michael A. Stackpole
• Starfighters of Adumar by Aaron Allston