There are three narrative theories that are often used, these are, Todorov’s theory, Strauss’s theory and Propp’s theory. Todorov’s theory is based on the state of equilibrium at each point in the film. Todorov suggested that each film starts with a state of equilibrium where everything is calm, then a problem happens and the state transfers to disequilibrium until the problem is solved and the state goes back to the equilibrium at the start or a new evolves state. This theory can be applied to The Little Mermaid (The Little Mermaid 1989) where all is calm, then Ursula causes ann issue and Ariel solves the issue resulting in a new state of equilibrium where she and Eric are married.
