Two extraordinary students face their ultimate test when they answer a call for help.
Triage and Tempus fly on their first solo mission as part of their training at the New Charles Xavier Institute. Then they receive an urgent SOS - Sentinels attack a powerful mutant who is desperately defending a wounded politician. They stop training and answer the emergency call. But the identity of both will present the two young X-Men with far more problems than they dared to imagine.