Rose always planned on being in the Slytherin house when she went to Hogwarts, but that all changed when the Sorting Hat put her in Gryffindor. Now she has to navigate her life at Hogwarts in a different view, worst of all one of her closest friends, Regulus Black, stopped talking to her. Since she grew up in the Black house, she develops a closer relationship with Sirius and his friends. She eventually becomes the fifth Marauder and joins in on their fun.