Tension is introduced at the end of the first act or the beginning of second, it rises and rises throughout the second act, and then it is released in a climactic moment. The third act addresses the aftermath and the results that spring from this release of tension.
What I really like about this graph is how it shows that tension rises across the three-act structure—the idea that tension doesn’t appear right away, but is “introduced at the end of the first act,” then keeps climbing until it peaks in Act II. I agree with this way of mapping stories because it makes the relationship between time and emotional intensity really clear; seeing it graphed like this helped me understand why the middle of a story always feels the most chaotic and full of movement. It also made me realize that the release of tension in Act III isn’t just a wrap-up, but an intentional structural payoff that depends entirely on how well the earlier acts were built.