Having taken care of the love potion, Louise and Saito receive a new mission. In order to strengthen her country's alliance, Princess Henrietta is to be wed to the Emperor of Germania. Louise and Saito must recover an indiscreet letter that Henrietta wrote to Prince Wales of Albion or the wedding will be canceled. The princess is unable to see the prince in person because Albion is in a state of civil war. Guiche overhears the conversation and volunteers to aid the princess and Henrietta accepts, much to Louise and Saito's ire...