What’s happening in the story?

Elsa, princess of Arendelle, possesses the magical ability to create ice and snow. One night while playing, she accidentally injures her younger sister, Anna.

When Elsa comes of age, the kingdom prepares for her coronation. Excited to be allowed out of the castle again, Anna explores the town and meets Prince Hans of the Southern Isles, and the two immediately develop a mutual attraction.

Panicking, Elsa flees the palace, inadvertently unleashing an eternal winter on the kingdom in the process. High in the nearby mountains, she casts off restraint, building herself a solitary ice palace, and unknowingly brings to life her and Anna's childhood snowman, Olaf.

Meanwhile, Anna sets out in search of her sister, determined to return her to Arendelle, end the winter, and mend their relationship. While getting supplies, she meets mountain-man Kristoff and his reindeer Sven.

When Anna persists in persuading her sister to return, Elsa becomes agitated and accidentally strikes Anna in the heart with her powers.

Anna, seeing that Hans is about to kill Elsa, decides to throw herself between the two and subsequently freezes solid, blocking the blow. As Elsa grieves for her sister, Anna begins to thaw, since her decision to sacrifice herself to save her sister constitutes as an "act of true love."

The End!!!