Once the X-men arrive back in Tōhoku, Beast administers the vaccine to several infected mutants, while the others investigate strange occurrences in the area. On a flight to the dead zone, the Blackbird is shot down and buried by living snow. The X-men are crippled by Sublime in robotic armor, until Beast finds a weak point, allowing the others to defeat him. After the X-men discover a Mutant Detector, Sublime self-destructs. Caught in the middle of a blizzard, the X-men are forced to take shelter in a lodge resided by Yui Sasaki, former headmistress of her own academy when Hisako was younger.