High-schooler Gaia, who was born without the fear gene, is told that she will be next in a line of murdered girls, the rest of whom look just like her.
Gaia Moore, the girl without the ability to feel fear, is secretly in love with Sam Moon, who is in a relationship with her foster mother, and her friend Ed is involved with her worst enemy, Heather Gannis.
Teenage Gaia, born without the fear gene, gets herself into more and more danger when she consistently chooses "dare" in a game of Truth or Dare with Ed and Mary, who hope the game will tell them some about Gaia's mysterious past.
Gaia--a CIA agent's teenage daughter searching for the reason she was born literally fearless--tries to cope with Ed's renewed relationship with Heather, while Sam learns important information about Gaia's foster mother.
As Thanksgiving approaches, teenage Gaia, born without the fear gene, discovers that foster mother Ella has made unsavory plans for her with a doctor, and Gaia and Sam get closer as his relationship with Heather begins to wane.
Teenage Victoria who has a knack for getting into trouble and feels totally misunderstood by her mother, suddenly finds herself back in the forty's and involved with an equally trouble-prone girl who has some very familiar ways.
When a thief steals the bicycle she has secretly borrowed from her sister, 11-year-old Ari, in trying to recover the bike, learns a lot about dealing with people.