"Hajimete no Kurisumasu" centers on a young boy named Satoru, who lives with his mother in a small, snowy town. Satoru’s life takes an unexpected turn when he encounters a mysterious girl named Noel, who claims to be Santa Claus. Noel is on a mission to deliver presents to children around the world but has lost her magical powers due to a mishap. Satoru, initially skeptical, becomes involved in her quest to regain her abilities and complete her duties before Christmas Eve.

The narrative unfolds as Satoru and Noel work together to solve various challenges, including locating missing reindeer, repairing a broken sleigh, and restoring Noel’s magic. Along the way, they encounter other characters who either aid or hinder their progress, such as a rival Santa figure and a group of mischievous elves. The story balances lighthearted moments with themes of friendship, responsibility, and the spirit of giving.

Satoru’s character evolves as he learns to believe in the extraordinary and embraces the joy of helping others. Noel, despite her initial clumsiness and self-doubt, demonstrates resilience and determination, embodying the ideals of her role. Their dynamic drives the plot forward, culminating in a heartwarming resolution that underscores the importance of kindness and perseverance.

The series is structured around episodic adventures that build toward the overarching goal of saving Christmas, with each episode contributing to the development of the main characters and their relationships. The setting, a quaint winter town, enhances the festive atmosphere, while the interactions between Satoru and Noel provide both humor and emotional depth. The story’s focus on collaboration and the magic of the holiday season makes it a fitting narrative for audiences seeking a blend of fantasy and heartfelt storytelling.