In Scotland there is Hogwarts and in Brazil there is Castelobruxo, both mirrors to each other. Rosen Sato spends the last few weeks of his summer with his friend, Marco Clemente, a pureblood from one of Brazil's most influential pureblood families. Except Marco and others have migrated to Britain. Despite this, Marco's dad still travels to his alma matter, repeatedly. Rosen doesn't think much of Mr. Clemente's frequent trips, it's OWL's year, he has things to focus on. Except suddenly self-proclaimed seer, Joey Bandara has a vision that causes her to leave Marco coded notes and little Adelaide Jacobs is seeing weird things in the lake. Marco goes to investigate, being one of the only ones to believe Adelaide and winds up floating face up across the great lake the next morning. Marco isn't dead but he's covered in scratches and bite marks and there's some sort of sleep spell on him. His family members, other Brazilians have to call upon the help of other peers in order to decode and learn more of the myths and history of their mirror school. Rosen won't abandon Marco or his family with this. The entire school is being affected by the mystery. Rosen just wants Marco to wake up.