Calliope (Callie), her brother Jax, and her parents have moved across the pond to Scotland after they inherited a castle from an older woman whose small cottage they lived in as university students. Callie is hoping for a fresh start after a falling out with her friends back in the States. However, she quickly realizes that fresh starts aren’t automatic, even when you move countries.
Twelve-year old Sara Martinez is a hacker bouncing from foster home to foster home in Brooklyn, New York. After getting arrested for hacking into the NYC foster care system to expose her foster parents as criminals, she meets a man named Mother who is not a lawyer but convinces her to take on her case. Mother somehow wins and Sara gets released only to join a team of kid spies operating out of a base in Scotland.