First Act Break - Your heroes set off on their journey, also known as, "The point of no return."
Second Act - Your heroes begin their journey.
Mid Point Break - All is lost. The heroes are at their lowest, on the verge of giving up, but they pull it together and forge onward.
Second Act Break - Heroes make a decision that brings about the final challenge to vanquish the forces that hinder them.
Third Act - The Hero faces the antagonist and risks all to accomplish goal.
Ending - Hero either accomplishes goal or fails.