Lexi Grayson is a normal teenager, as normal as she can be with her unobserving skills and her overthinking mind. But she might need the overthinking if she wants to unravel the smirking mystery that is Blake Eaton.

Arden Resnell and Harry Styles met on Day 1. 500 days later, Day 500 was the last time they thought they would ever see each other. [Based off 500 Days of Summer]