While Dash hates Christmas, his spirits brighten after he finds a mysterious red notebook filled with clues hidden at his favorite bookstore.
While Lily loves Christmas, the prospect of a lonely holiday inspires her to connect with Dash through the notebook.
After Lily shares the memory of her worst-ever Christmas, Dash devises a late-night challenge that pushes her out of her comfort zone.
When Lily fails to leave the notebook in the prearranged spot, Dash tries to track her down using the unique footwear she left behind.
As Dash and Lily forge a deeper connection with dares, they deal with past heartbreaks and family issues.
Real-life distractions complicate Dash and Lily's relationship as they decide to attend a holiday party with other people.
A dreary Christmas morning and an enlightening pun lead Lily to question everything she knows about Dash.
As the year's final hours tick down, Dash does some soul-searching and reaches a decision about Lily, unaware that her life is about to change.