"Louise and her spellcasting companions have been sent on a top secret mission to the Kingdom of Albion, where the royal family is besieged on all sides by rebelling nobles. They are accompanied by the dashing Viscount Wardes, who is not only captain of the Griffin Corps but is also Louise's longtime fiancé. Saito can't help but feel jealous of the impressive captain, but there's a more pressing concern: will they find the Prince of Albion in time...

Louise and Saito are still undercover at the Charming Fairy Inn when they get some bad news - Queen Henrietta is missing! With their relationship on the rocks, Louise and Saito each decide to help Henrietta in their own way. Louise teams up with a serious, noble-hating Chevalier named Agnes and pieces togther clues about the conspiracy to take Henrietta's throne. Meanwhile, Saito finds a more intimate way to help the queen...

The last battle between Tristain and Albion is on the horizon, but when a brief ceasefire gives everyone a chance to rest and reflect, Saito finds himself clashing with Louise once again - and driven into Siesta's waiting arms. Tristain's victory seems inevitable until an unexpected, magical attack turns the tide against them. With his loved ones in danger and his life on the line, will Saito finally figure out what he is fighting for?

War rages on between Tristain and Albion, and the inept mage Louise has a new top-secret mission. But before she can take on the enemies of her country, she'll need to get past an even tougher opponent - her family. Can Louise convince her dismissive older sister that she's not a Zero anymore? Saito and Siesta get dragged along for the ride, and seeing Louise at home in her family's extravagant palace makes them both rethink the crushes they've been...