- Used as further complication/obstacle the character has to deal with (to add drama, suspense, and/or stakes)
- A secondary character makes matters worse for the protagonist
- Setting up relationships and adding stakes: Romantic subplot for example
- Providing additional information about the characters: The subplot can explore a character’s backstory or show their personal life, which can help the audience understand the character better.
- Contradict theme/moral argument of the main plot
- Where a character deals with the problem of the main plot in a different way with a different outcome (good or bad)
- Underline the theme/moral argument of the main plot by showing variations of the theme and underlining the overall message.
- Offering a counterpoint to the main plot: The subplot can contrast with the main plot, providing a different perspective or tone.
Providing relief from the tension of the main plot: The subplot can offer a moment of relief from the main story’s tension or provide comic relief.