The movie kicks off with a mysterious situation. A blonde woman delivers a box containing Santa and a microchip. They flee together, and we discover that this is actually a TV show that a woman named Whitney watches intently while eating cereal in her PJs—just like me on Saturday mornings. Her coworker, Rachel, tries to set Whitney up on a date because she thinks Whitney watches too much TV—a bold statement, especially in a movie on a network that starts playing 24/7 Christmas movies two weeks before Halloween.

We then meet real-life Secret Agent Josh Dawson, who works for a detective agency and has been undercover for six months with no results. His boss tells him they’re shutting down the operation, but Josh explains that he wants to stop a heist involving a necklace called the Heart of Christmas, worth over $10 million, set to be displayed at a Christmas ball on Christmas Eve. His boss agrees to give him one more chance, but only if he has a partner. So, Agent Keira Tanner is assigned to go undercover as Dawson’s girlfriend.

Dawson, wearing a green sweater, agrees to meet with Keira to discuss the case. However, Whitney, who is supposed to be on a blind date with someone in a green sweater, sits down with him first. He jumps right into discussing the case, and Whitney is bewildered. He quickly realizes she’s not who he was supposed to meet, but it’s too late—they’re expected to have dinner with “the mark.” So, he asks Whitney to just play along.

Whitney reluctantly agrees but immediately fumbles by telling the couple that she’s a ballroom dancer between jobs. The woman, Patty, then asks Whitney to help plan a ball!

The next day, Agent Dawson brings Whitney to his boss, intending to figure out how to remove her from the situation. But the boss sees an opportunity: Whitney has secured regular access to their targets, so she can’t drop out now. However, she’ll need some training.

Cue a training montage where Whitney initially struggles but eventually masters everything, from backstory to subtle texting. She’s ready to go!

At Patty and Maxwell’s, Patty gives Whitney the lowdown on the necklace while Dawson snoops around. He’s caught by Maxwell, but Maxwell brushes it off and offers him a bottle of wine.

Finding no clues, they visit a museum to devise a plan for catching the thieves during the party. The museum guide mentions he once got tricked by a fake painting, giving Whitney an idea: a fake necklace!

They find a woman who makes jewelry and can whip up a replica in just a few hours. They stay to watch her work, and Dawson is impressed by the result.

In the short time before the party, Whitney decorates Dawson’s apartment for Christmas because, well, you have to.

The necklace arrives and is kept in a secure area. Dawson lowers Whitney down to swap the real necklace with the fake one, but the mission fails. Now, they’ll have to try during the actual party.

Before the party, Whitney has a game night with her family, and Dawson agrees to join. The game is Christmas charades. Nervous about meeting a girlfriend’s family for the first time, Dawson ends up having fun and winning over the family, who are a bit suspicious of these two lovebirds.

It’s party time! When they see each other dressed up, sparks fly. At the party, they’re about to swap the necklaces when Patty suddenly introduces them for a surprise tango. Fortunately, they nail it. Then Whitney’s dad unexpectedly shows up.

While they’re talking, the power goes out, and the necklace goes missing. They spot a man with a briefcase and chase him to the roof. Opening the case, they find it’s a decoy. Looking down, they see the museum director escaping with the jewels—and Whitney’s parents have been taken hostage!

They rappel down and catch up with the van, only to find that her parents have the situation under control. It turns out her parents used to be in the FBI. They explain that they were suspicious after Whitney rescheduled game night, so they showed up at the party and quickly figured things out. They even secured the real necklace.

The movie could end here, but it doesn’t. Whitney feels betrayed by her parents and storms off, upset that they ruined her exciting night. Josh follows her and tries to calm her down, telling her her parents are amazing. She retorts, “What do you know about family?”—a stinger, given that Josh grew up in the foster system.

As Whitney mopes, she realizes the painting the museum guide mentioned earlier has been stolen. She suspects Patty and goes to confront her, only to end up in danger. Just as the bad guys are about to capture her, the FBI storms in and saves the day.

It’s Christmas Day, and Whitney’s parents arrive with gifts and apologies. She forgives them. Josh shows up, and Whitney gives him a Christmas present—a snow globe. He gives her a replica of the Christmas necklace. Whitney invites Josh to spend Christmas with her family, and they kissssssss as the fake snow snows.