A Chipmunk Christmas

A doctor visits the Waterford family to assess Tommy's illness and delivers sobering news. He explains that the odds of Tommy recovering before Christmas are bleak and uncertain. The weight of the prognosis casts a shadow over the household as the holiday season begins.

The Chipmunks begin a recording session in their studio, pushing through the holiday hustle. Alvin initially resists the idea of working on Christmas, worried about missing celebrations. The studio hums with practice as the trio tries to stay focused.

Alvin struggles to sing in tune, weighed down by Tommy's illness and the distress it causes. His emotional distraction shows during the recording, highlighting how much he cares about Tommy's recovery. The others notice his moment of vulnerability.

During a break, Alvin visits the Waterfords' home and presents Tommy with his own harmonica, hoping to lift his spirits. The gesture comes from a place of empathy, not obligation, and Tommy's smile hints at a spark of improvement. Alvin returns to the studio, carrying the weight of the moment.

With Tommy's spirits lifted, Alvin re-enters the session and helps the Chipmunks finish the recording. The music flows more freely now that Alvin is renewed by the thought of Tommy's recovery. The team closes things out on a hopeful note.

Back at home, the Chipmunks decorate the tree while Simon and Theodore congratulate Alvin for his selfless gesture. The moment deepens their bond and reassures them that family and friends come first. Alvin keeps the secret about the harmonica, worrying about Dave's feelings.

Alvin resolves to save his money to buy a new harmonica after Christmas, viewing it as a personal project to repay the kindness shown to Tommy. The plan keeps his ambition in check while he hopes for a brighter holiday. He becomes determined to balance generosity with his own goals.

Two hours before the concert, Dave receives a call from Carnegie Hall inviting Alvin to perform his harmonica on Christmas Eve. The opportunity excites Alvin but adds pressure to arrange the perfect moment. The news also foreshadows a potential financial obstacle if a new harmonica is needed.

The Chipmunks organize a photo booth with Santa (presented as Alvin) to raise funds, inviting neighborhood children for photos. A passing cat distracts Dave, and he misreads Alvin's intentions, assuming greed rather than generosity. The misunderstanding briefly strains trust within the group.

Unable to shake off the tension, Alvin has a dream in which Clyde Crashcup appears, proposing a fantastical version of Christmas and Santa. The dream reflects Alvin's inner conflict about money, fame, and doing the right thing. The surreal sequence nudges him toward clarity by morning.

On the eve of the performance, an old woman buys the harmonica for Alvin, asking only for a song in return. The purchase saves Alvin from needing to rely on his own money and shifts the moral balance toward gratitude. Dave, Simon, and Theodore soon arrive with an unexpected surprise.

At the concert, Tommy has fully recovered and Alvin joins the Chipmunks on stage to perform. The audience sings along as Santa Claus flies over the city, closing the night with holiday cheer. The twist reveals that Santa's wife is the harmonica gift-giver, tying the miracle back to Alvin's selfless act.