a series of scenes that make up a larger dramatic unit is called a
Act (drama) An act is a division or unit of a theatre work, including a play, film, opera, and musical theatre. The term can either refer to a conscious division placed within a work by a playwright (usually itself made up of multiple scenes)[1] or refer to a unit of analysis for dividing a dramatic work into sequences. The former use of the term may or may not align with the latter.
Climax (narrative) The climax (from the Greek word κλῖμαξ, meaning "staircase" and "ladder") or turning point of a narrative work is its point of highest tension and drama, or it is the time when the action starts during which the solution is given.[1][2] The climax of a story is a literary element.