Welcome to Seacoast High School where popular girl Arianna Carter (Madelaine Petsch) goes but in her shadows hides little sister Jessie Carter (Sophie Skeleton) and then there's her best friend Avery Parks (Lili Reinhart) and Anastasia Montgomery (Camila Mendes) each one of those girls are different Jessie is the sweetest girl you'll ever meet but she's also very smart, then Avery is a badass she the scary one of the group and she isn't afraid to stand up for Jessie when Arianna keeps making fun of her and then there's Anastasia she had a lot of money but she also gives the best advice and every boy wants her so Arianna's always spreading rumours that she's the school slut. Then out of the blue a mysterious but attractive young man transfers to Seacoast High he goes by the name Finn Adams. On his first day there he bumps into Jessie but she hardly takes notice of him but him on the other hand he see's how beautiful she is as well as sweet and smart, Arianna think that Finn (Thomas Brodie Sangster) likes her not her sister but as time goes on Jessie slowly starts to fall for the charming man so will everything end up in happily ever after for Jessie and Finn or will they drift apart.