Monster researcher Nordrad Evans arrives at Sarasa's shop with a letter of introduction that is less than glowing. Asked to assist in his scientific investigation of the salamander's den, she comes up with the idea of using a remote-controlled homunculus. Iris and Kate go along in person, but...Nord's obsessive behavior causes another salamander to attack?! In the collapsed cave, all they can rely on is Sarasa's homunculus to provide direction. Will the three make it back alive?!