At 67, retired math teacher Margaret loses her genius programmer daughter Sasha in a suspicious car crash. She discovers Sasha’s core encryption algorithm has been stolen by her husband and a tech tycoon. Learning coding from scratch, Margaret cracks a hidden cipher left by Sasha and uses blockchain evidence to fight corporate power. Through courtroom battles, cross-border investigations, and uncovering traitors and masterminds, she clears Sasha’s name, reclaims the algorithm, and builds a foundation—turning code into justice, love, and legacy.
