climactic

The most crucial and decisive point in time of an event or process.

The most intense or exciting scene in a film, play, or book.

The final and most impressive part of a performance or event.

A series of related scenes that form the most exciting part of a narrative.

The final and most exciting battle in a series of conflicts.

A final, decisive confrontation intended to settle a dispute.

The final and most intense argument or conflict between opposing sides.