Elsa is released and rides the water spirit to Arendelle, where she freezes the flood and saves the kingdom. As the mist disappears, she rejoins Anna and revives Olaf. Realizing she is the fifth spirit herself, Elsa explains to Anna that they are the bridge between the people and the magical spirits.

So because Elsa is the gift of Iduna's good deed, the fifth spirit who was chosen to rectify the evil deeds committed by her grandfather, it is why the voice calling to her is that of her mother when she did the first right thing by saving Agnarr.

On November 27, 2013, Walt Disney Animation Studios released its 53rd feature film, Frozen—which quickly snowballed into an Oscar^®-winning, $1.29 billion blockbuster that continues to enchant fans around the world a decade later.