Sunfire returns to Department H for answers about his "radiation poisoning" and is not happy. Big Hero 6 calls for help when X the Unknowable attacks an amusement park in Japan. Sunfire leaves to help and Alpha follows; Meanwhile, Northstar meets Sasquatch and Shaman outside the Dapartment H headquarters looking for his sister, but they warn him about going inside; Dr Huxley, having been treated unkindly by the new director, heads to the basement and his super-secret creation, the new Weapon X. Unfortunately, Weapon X has escaped.
