Brainstorming a simple list of cause and effect events that build in intensity will help you plot your story. Use this planner to help you get started.

Conflict/Complications
(The problem and complications.)

Character(s) Reaction
(What the character does.)

Effect of Reaction
(What happens as a result to complicate the conflict and build intensity.)

Conflict/Complications
(The problem and complications.)

Character(s) Reaction
(What the character does.)

Effect of Reaction
(What happens as a result to complicate the conflict and build intensity.)

Repeat this exercise as many times as needed!