A calculus nerd, Marlowe Meadows, enlists the help of her surly classmate, Ashton Hayes, to win back her ex-boyfriend. However, as they work together, Marlowe realizes that there's no algorithm for falling in love. Marlowe understands that calculus isn't universally appealing and that discussing Python coding isn't the best conversation starter. Despite being surprised when golden boy Josh asked her out, Marlowe embraced their relationship. Yet, she's shocked when Josh dumps her for someone more romantic. Determined not to fail, Marlowe strikes a deal with Ashton: she'll help him write love letters to win back Josh if he helps make his band go viral. As they collaborate, Marlowe discovers a new side to Ashton and finds herself drawn to him in unexpected ways. With yearning love notes and late nights, Marlowe realizes that love doesn't always follow a formula.