When Stephanie is forced to change schools in the middle of her senior year, she finds a new friend and a new mystery. But, when the curious becomes dangerous Stephanie must call upon Amber and Paul to unravel the cause of an unknown virus. Once again the friends pull together to face down danger. But, behind this enigma another story emerges. The story of friendship, peril, and secrecy continues as Paul and Amber rush to help save Stephanie from an unseen menace.