Deep in the belly of Baba Yaga Castle, Maka, Soul, and Medusa prepare to face Arachne in her own chambers. Arachne has grown even stronger since their last meeting, and even the crafty Medusa is caught in her sister's twisted web. As Arachne's intense madness threatens everyone in and around the castle, Soul must perform a string concerto that will move his audience to their very souls...or be caught in the witch's net himself!