When brilliant neuroprosthetic engineer Tom Jackman begins blacking out and waking up in strange places, he discovers he shares his body with a violent, superhuman alter-ego—Mr. Hyde. Desperate to protect his wife Claire and twin sons from the monster inside him, Jackman hires psychiatrist Katherine Reimer to help. But as Hyde grows stronger and a century-old conspiracy emerges, Jackman learns his condition is genetic—and that a shadowy organization led by the ruthless Mrs. Utterson has been waiting generations to weaponize Hyde's abilities. With his family's lives on the line, Jackman must decide whether to destroy Hyde—or embrace the monster to save everyone he loves.