Robyn McCall, an enigmatic former CIA operative, must use her extensive skills to help a teenager accused of murder and on the run from the criminals who framed her for her crime.

McCall helps a mother whose son is being held hostage by traffickers.

When McCall tries to locate a missing British mathematician, she finds herself embroiled in an international fight for a revolutionary financial technology.

Mel goes undercover as a volunteer for a rising politician when McCall tries to help a despondent college student being threatened by someone inside the candidate's campaign.

McCall's personal and professional lives collide when Delilah and her friends are threatened by a European crime syndicate for being eyewitnesses to the outfit's execution of a drug cartel boss.