Revenge movies don’t need to be this complicated.
The “Rhythm Section” is about a woman named Stephanie (Blake Lively), who lost her entire family in a plane crash. Since the tragedy, she fell into a world of drugs and prostitution. However, she learns from an investigative journalist that the plane crash was actually orchestrated.
With that knowledge, Stephanie seeks help from a former MI6 agent named B. After some pleading, B agrees to train her and prepare her for revenge on those who planted the bomb on the plane.