Kris Argentia is a 16-year-old mathematical genius, who recieved her PhD at the age of 10. She just wants to be a normal teenager. The threat of a potential alien invasion shatters her world while she confronts her feelings for her best friend Sonu.
Ji Choi is a born leader with the need to keep up a tough exterior. She is an agent in the mysterious group called Central. Charged with confronting the alien orbs head on, her true motives remain unknown. Since the appearance of the orbs, Choi turns her focus to Kris.
Sarah Argentia is a single mother. She does what she can to remain strong, even in the face of the uncertainty caused by the appearance of the orbs. Sarah will do anything to protect her daughter Kris, and wants her to have a normal teenage life.
Nathaniel Wallace is a brilliant mathematician spearheading a team of mathematicians working to communicate with the orbs. Brash and self-centered, Wallace will do anything to push his own agenda.