The latest clash of magic and science in Academy City is leaving bodies strewn across the streets As Accelerator takes on Amata Kihara and the secret ops team known as Hound Dog, an intruder from the Roman Orthodox Church-Vento of the Front-infiltrates the city to crush Touma and his Imagine Breaker. With Touma and Accelerator fighting for their lives, will their paths converge and turn old enemies into erstwhile allies?