Marika Kato learna that her father has died. She also learns her father was leader of a licensed group of pirates and that she is the only person able to take on the role of captain, or her father's ship will lose their piracy license.
After the attack at the Lamp House, Marika learns that her status as likely captain of the Bentenmaru has attracted the attention of government agencies and made her a kidnapping risk.
Marika is told her grades are suffering as a result of her added responsibilities on the Bentenmaru. The Bentenmaru is offered a last-minute job at double the normal rate.
While on the way home, the Bentenmaru is asked to go back to the Serenity kingdom. Marika starts school as a second year student, with a couple surprise students joining the Yacht Club.
The crew of the Bentenmaru is deliberately infected with a virus that will sideline all of them--except Marika--for two weeks. Marika is forced to deal with the insurance agent as well as pending jobs and risk losing the Letter of Marque.
Marika has finally assembled her crew, but teaching them the inner workings of running the Bentenmaru will prove difficult. Hidden cameras allow the old crew to watch and wonder: will this crew of rooks have what it takes?
The real Bentenmaru crew will be tasting fresh air soon with their impending release. Marika has taken it upon herself to tidy up the ship before then, but the job proves to be more than she can handle.
The Yacht Club decides to enter the 19th Nebula Cup with the dinghies found on the Odette II, but only one person has ever flown one. Cain sets himself the task of training the girls for the tournament.
The Yacht Club girls arrive at the tournament and learn the reason their school had a 5-year suspension. Marika takes out a dinghy herself to oversee security.
The pirate hunters withdraw when the Parabellum arrives and attacks the hunters' ship. Marika and the crew of the Bentenmaru work to rescue the crew of the Big Catch, critically damaged in the attack.
The Final showdown is here: Marika vs. Quartz in an all out grudge match to claim ALL the booty. An unexpected third challenger appears, adding fuel to the fire.