The GetBackers are approached by a young blind girl named Madoka who wants her stolen Stradivarius back.  The man who has it is also a big crime boss.  Ban, Ginji, Hevn, Natsumi and Paul pose as a quintet in order to get it, but what they don't know is that they are expected and traps have been laid.  These include a one-time acquaintance of Ginji's from the Limitless Fortress named Shido.