Despite a childhood she can't remember, Lucy has found peace. But when a man from her past shows up, the life Lucy built is put in the crosshairs. After Lucy and her chosen family flee to find answers, she meets a woman who only begs more questions.

Lucy forces Jules to go to Settlement House where she enlists Craig's help in a haphazard interrogation. Kira receives an unexpected visit from a family member. Billionaire Paul Darros raises alarm with his team in his search for Lucy.

Kira's research as a graduate student captures the attention of Paul Darros as well as Professor Eleanor Miller, setting in motion a life marked by love, achievement, and struggle that carries enormous ramifications for Lucy many years later.

Kira teams up with Lucy to chase down a lead about Jules, all while Kira navigates problems at home. After being kidnapped and taken to Paul Darros' mysterious compound, Jules attempts to escape captivity with the help of an unusual new friend.

Craig reveals a secret to Lucy; Xander on the memory drug makes him question whether he wants to carry on Darros' legacy; as Kira gets closer to uncovering Darros' master plan, a security breach could cause her to lose everything she's discovered.