Elsie Hannaway é uma física teórica que passou anos de sua vida moldando diferentes versões de si mesma. Em alguns dias, ela trabalha como professora adjunta, na esperança de conseguir um emprego melhor. Em outros, compensa seu ridículo salário oferecendo serviços de namorada de mentira, aproveitando sua habilidade de se adaptar exatamente ao que os outros querem dela.

Mara, Sadie e Hannah são três grandes amigas e cientistas tentando equilibrar razão e emoção. Embora seus campos de estudo as tenham levado para diferentes partes do mundo, todas elas concordam com uma verdade universal: quando se trata de amor e ciência, os opostos se atraem e algumas misturas podem ser perigosas…

Catalina Martín é uma jovem espanhola que trabalha como engenheira em Nova York. Com o casamento da irmã se aproximando, ela precisa desesperadamente de um acompanhante, porque não quer encarar sozinha toda a família e, principalmente, o irmão do noivo, que é ninguém menos do que seu ex. Sentindo-se pressionada, ela conta uma mentirinha inofensiva sobre ter um namorado americano. E agora todos em sua pequena cidade estão ansiosos para conhecê-lo.

A carreira de Bee Königswasser está indo de mal a pior. Quando surge um processo seletivo para liderar um projeto de neuroengenharia da Nasa, ela se faz a pergunta que sempre guiou sua vida: o que Marie Curie faria? Participaria, é claro. Depois de conquistar a vaga, Bee descobre que precisará trabalhar com Levi Ward–um desafio que a mãe da física moderna nunca precisou enfrentar.

Olive Smith, aluna do doutorado em Biologia da Universidade Stanford, acredita na ciência–não em algo incontrolável como o amor. Depois de sair algumas vezes com Jeremy, ela percebe que sua melhor amiga gosta dele e decide juntá-los. Para mostrar que está feliz com essa escolha, Olive precisa ser convincente: afinal, cientistas exigem provas. Sem muitas opções, ela resolve inventar um namoro de mentira e, num momento de pânico, beija o primeiro homem que vê pela frente.

It’s the flight before Christmas and Molly just got an unexpected gift: a free first-class upgrade on her plane trip home for the holidays. Bring on the complimentary cocktails! But after one too many, she spills all her secrets to the hot guy seated next to her—only to wake up mortified when her buzz has worn off. At least she never has to see Liam again ... or so she thinks. When Molly arrives at Christmas House, the festive rental home that she and her family are sharing with her sister’s fiancé and his wealthy family, she discovers that Liam is one of the new in-laws. Oops.

When mystery author D. B. Ziegler is late delivering her book, Abi Schore steps in to help. Surely she can give her favorite author moral support over the holiday break and get the manuscript to her boss at Tea & Sympathy Publishing in time for the new year. When Abi shows up on Ms. Ziegler’s doorstep bearing holiday treats, she’s met by the author’s handsome grandson Dov, who reveals a startling plot twist. His grandmother isn’t able to finish the book and Dov promised he’d complete it so fans won’t be disappointed—a task that’s harder than he ever imagined.

Living in a year around Christmas town has its drawbacks. The caroling, the decorations, the insanely cheery spirit, it never disappears. It's why I like to hibernate away in my cave - I mean housekeeping a healthy distance from the holly jolly spirits. And all was going according to plan until my nemesis, Storee Taylor, moved in next door to care for her Aunt Cindy. Without blinking, she turned my simple world into a real nightmare-before-Christmas, especially when she decided to enter the town Christmas Kringle contest - which she was determined to win.

Lowen Ashleigh is a struggling writer on the brink of financial ruin when she accepts the job offer of a lifetime. Jeremy Crawford, husband of best-selling author Verity Crawford, has hired Lowen to complete the remaining books in a successful series his injured wife is unable to finish. Lowen arrives at the Crawford home, ready to sort through years of Verity's notes and outlines, hoping to find enough material to get her started. What Lowen doesn't expect to uncover in the chaotic office is an unfinished autobiography Verity never intended for anyone to read.

There's no place like home for the holidays ... especially for Lesley Carver. Life in the big city just wasn't her jam and now she's back in Hickory Falls, working at the family diner and helping her mom after she took a tumble. Lesley longs to build a life here, working at the cafe, selling her handmade ornaments and ... er, apparently reviving her high school crush on her best friend’s older brother. Only one problem, her mom wants her to leave Hickory Falls far behind.

All newly minted pediatrician Jamie Malek wants is to borrow a roasting pan for Christmas dinner. Unfortunately, that requires her to interact with Marc—her best friend’s troublemaking brother, who’s now a tech billionaire. He’s the one who got away. She’s the one who broke his heart. Outside, a howling blizzard. Inside, a crackling fire. Suddenly, being snowbound with the man she never expected to see again might not be such a bad way to spend a winter’s night.

Tilly Farriday isn’t feeling very jolly this season. Recently divorced and broke, she’s squatting in one of her rental agency’s properties until her new home is ready. The sprinkles on top of the burnt Christmas cookie that is her life? The new owner shows up early, forcing Tilly to hide in the attic to save her job…and what remains of her dignity.

When Everleigh Dangerfield’s baking disaster necessitates a call to 911, firefighter Griffin Brantley douses the flames in the kitchen, but the ones he stokes in Everleigh are an entirely different story. Unfortunately, Everleigh’s only visiting and doesn’t do casual hookups, no matter how smoldering the temptation. But Everleigh’s holiday mishaps have just begun. And Griffin is seemingly always on call. If Everleigh is game for a change of plans, he can give her the merriest Christmas of her life.

Clark Griswold was onto something...at least with his annual holiday meltdown. And since the last three weeks of my life have been riddled with humbug—another breakup, a broken toe, an office promotion I deserved and didn’t get—I’m not at all in the mood to celebrate nor have the happ, happ, happiest Christmas EVER.

After a snowstorm grounds her flight, Lucy makes a last-ditch effort to get home for Christmas using a rideshare app. She thinks she’ll be taking a road trip with a stranger...but the guy who shows up is someone she knows all too well. He’s the hookup she ghosted a few months ago, and now she’ll be stuck in a car with him for the most awkward road trip of her life.