Rin Ito is on the mission of her life. As a member of the Hidden Sound, and one of only two ninja whom have perfected the "Soman" or the "Sleepwalker's Jutsu," she's been tasked with bringing sleep to her most lethal client yet; Lord Gaara of the Sand. When she takes a walk around the darkest recesses of his mind, will what she find there be enough to save him or will she fall prey to the monster which always lurks in his shadow?