After an accident on the "Capitol Sub" route puts their closest friend and coworker out of commission, Aaron and Shadow are soon relocated but later discover that their associate's tragedy was no accident. And Aaron's older sister returns on a week-long visit with her brother and sister-in-law and to check how things are progressing in their new lives. But, when she unexpectedly goes missing, Aaron must regroup with the rest of the Rogue Warriors and find her before all hell breaks loose.