Sophomore Emily Fields Is the star swimmer at her school Harvard University. When Emily begins to fail her English class the coach threatens to kick her off of the team if she doesn't up her grades. Spencer Hastings which is Emily's best friend suggests that she get Alison DiLaurentis to help write her Final English essay. Alison is sweet and Emily has a bad reputation. What happens when Emily and Alison get together to write Emily's final paper.