When Anthony’s school project gets him in trouble with his teacher, it creates tension between Luke and Henry and the rest of the family. After Henry sends Anthony on a scavenger hunt for his 10th birthday, Helen and Luke panic when their son mysteriously vanishes.

Henry asks Fred for help in decoding the clues left by Anthony’s abductor. Luke and Helen still believe their son's disappearance is related to Henry's past. Susan makes an important discovery and issues an Amber Alert.

The police and the Sullivans race to find Anthony.