Elektra is a skilled assassin haunted by her traumatic past and struggles with her inner demons. Living a solitary and disciplined life, she takes on a high-paying assignment to eliminate Mark Miller and his teenage daughter, Abby. However, upon discovering their innocence and the bond forming between them, Elektra defies her orders and vows to protect the Millers from the deadly forces sent to complete her unfinished task.

As Elektra delves deeper into protecting Mark and Abby, she uncovers ties to an ancient martial arts organization known as The Hand, who employs supernatural warriors to eradicate their enemies. With danger closing in from all sides, Elektra must confront not only her lethal adversaries but also her own identity and responsibilities. This leads her on a personal journey marked by intense battles and self-discovery, culminating in confrontations that test her skill and resolve.