After pretending to be a couple, Lara Jean and Peter finally make their relationship official. With Peter, Lara Jean experiences a lot of firsts: her first kiss, her first real date, and her first coupled-up Valentine's Day. Everything is going well for her until John Ambrose, one of the recipients of her infamous love letters, shows up and enters her life once again. Lara Jean then finds herself in the middle of a big dilemma, prompting her journey of self-discovery.