the stage of plot that shows how the story ends is called
Plot (narrative) In this phase the protagonist and antagonist have solved their problems and either the protagonist or antagonist wins the conflict. The conflict officially ends. Some stories show what happens to the characters after the conflict ends and/or they show what happens to the characters in the future.
Revenge tragedy Revenge tragedy (sometimes referred to as revenge drama, revenge play, or tragedy of blood) is a theatrical genre in which the principal theme is revenge and revenge's fatal consequences.[1] Formally established by American educator Ashley H. Thorndike in his 1902 article "The Relations of Hamlet to Contemporary Revenge Plays," a revenge tragedy documents the progress of the protagonist's revenge plot and often leads to the demise of both the murderers and the avenger himself.[1]