One train. Two rules. Three days to fall in love. Clair Ackerman needs a stiff drink and a distraction. After her recent breakup, she's looking for a way to celebrate her newfound independence. What she gets instead is an unexpected reunion with her high school crush, Aiden Lewis. Aiden's boss just insisted he take his first paid vacation in over a year. The last thing he expects to find is Claire Ackerman with big plans of taking the train to Florida. Despite fighting the urge to go with her, he finds himself unable to walk away. Claire doesn't want to fall for Aiden, so much so that she makes a rule to ensure that doesn't happen. The last thing Aiden wants is to develop feelings for Claire, so he tops her rule with one of his own. Will their agreement be enough to keep them apart, or will this spontaneous trip spark a love that neither knew they needed?