Mantis (2025) Plot Summary & Ending Explained

With tensions at a breaking point, Han‑ul, following Boksoon’s advice, forwards the knife back to Jae‑yi and calls her to a showdown at the MK ENT headquarters, using the same venue as his own confrontation with Dokgo. He assumes Jae‑yi will side with him against their former master, but her long‑standing resentment toward Dokgo drives her to target both men.

During the three‑way battle, Jae‑yi manages to kill Dokgo, finally avenging the rejection and the years of being kept from her potential. She then turns her blade on Han‑ul, whose attempt to protect her ends in his defeat. In those final moments Jae‑yi is filled with regret, realizing that her relentless drive for supremacy has cost her the friendship she once cherished.

The film closes with Jae‑yi assuming control of MK ENT—and, by implication, JB Entertainment—while delegating the elimination of the treacherous Benjamin to Han‑ul. This act suggests a fragile, professional truce between the two: they remain wary of each other’s motives, yet both stand to benefit from a divided, yet cooperating, underworld. The unresolved fate of Benjamin hints at future power struggles, but for now the ending underscores how ambition, betrayal, and a single blood‑ied knife can reshape an entire killing‑industry empire.