Frozen was a cultural phenomenon that took the world by (Elsa’s) storm, so when Frozen II came out six years later, expectations were high. While the sequel delivered another film with stunning visuals, memorable songs, and vibrant settings, many viewers found its plot confusing, unclear, or even self-contradictory. When Frozen III comes out in 2027, it might negate my theory; however, I believe that Frozen II presents a coherent and canonically supported explanation of the Fifth Spirit, one that resolves many of these perceived contradictions.
During a fireside conversation, Honeymaren tells Elsa that the Fifth Spirit is “said to be a bridge between the magic of nature and us.” But its identity remains mostly unclear until the film’s conclusion, when Anna tells Elsa, “You’re the bridge.” Yet Elsa seemingly denies this by saying, “Actually, a bridge has two sides. And Mother had two daughters.” This suggests that only Elsa and Anna together make the Fifth Spirit.
If the Fifth Spirit is a bridge, then one side must be fully human and the other fully spirit. Anna clearly represents the human side. Elsa, despite being born human, must therefore represent the spirit side. This raises the question of Elsa’s nature. I argue that Elsa is human only to a point. Her powers mark her potential to become something more, not her complete identity and ability.
Here I must pause to explain what I think the Fifth Spirit — and Ahtohallan — really are. Going back to Queen Iduna’s lullaby, Ahtohallan is called a “river full of memory” in which “lie the answers and a path for you.”
Throughout the film, the phrase “water has memory” is repeated, and Elsa’s ice sculptures repeatedly reveal preserved moments from history. When Elsa reaches Ahtohallan, she realizes that it is a frozen glacier, a river of ice. In other words, Ahtohallan is memory, frozen in time.
Therefore, the Fifth Spirit is not simply snow or ice. Rather, it is time and memory themselves. Snow and ice are merely its visible form, just as Bruni, the Fire Spirit, has a physical form containing elements other than pure fire. This also explains why the Fifth Spirit is less prominent in the Forest than the others and known primarily through legend, since memory deals in the past, not the present.
The Northuldra knew the Fifth Spirit’s call, since they recognized it when the forest fell. It’s only later that we find out that it was Iduna calling out that day. I think that she was mistaken for the Fifth Spirit itself because by calling out to the Fifth Spirit, she temporarily bridges the gap between the Spirit and humans, memory and action, allowing it to act in the physical world. Through this bridge, the Spirit chooses to help Iduna save King Agnarr, in a poetic inversion of the other Spirits’ actions.
Anna initially interprets this as Iduna’s kindness being rewarded with Elsa. But in reality, the true gift was the connection forged between Iduna and Agnarr. This connection was fully solidified first when the two were married, and then it was fully perfected when they had children, the direct product of the spirit’s intervention.
Elsa’s powers are therefore not the full expression of the Fifth Spirit, but just a symbol of who she could be, should she choose to accept it — the Fifth Spirit does not force itself on Elsa. Instead, Elsa is able to solidify an unbreakable connection with the other half of the potential bridge that would bring the Fifth Spirit into being: Anna.
It is only when Elsa grows restless that the Fifth Spirit, from Ahtohallan, begins to call her to her full potential.
When Elsa reaches Ahtohallan, she makes three critical decisions. First, she steps into the center of the “snowflake,” accepting her role as the spiritual side of the bridge and gaining much greater access to memory and time than she had before, when the only hint to her true potential was her powers over snow and ice. At this point, she unlocks full access to all of her potential as the Fifth Spirit, but she is shielded from some of this by her mother and the Fifth Spirit, who keep her from going too far.
Then, she leaves the protective dome, choosing to push beyond safe knowledge and into the place where she is the only one who can keep herself from going too far.
Finally, she jumps into the heart of Ahtohallan, crossing the point of no return. Seeing the truth that lies there, she can’t go back to being human again. She now has enough knowledge to have fully crossed over to the spiritual side of the Fifth Spirit. But because the Fifth Spirit exists outside of time, she can no longer exist in the present. So she freezes, becoming trapped in memory and a part of Ahtohallan itself.
However, every bridge has two sides. Elsa remains connected to Anna, and through that connection, she sends her new knowledge back to the human world. Anna uses this memory to act in the present, destroying the dam and reversing the original cause of conflict. In doing so, Anna completes the bridge by putting knowledge from the Fifth Spirit into reality. In this, she pulls Elsa back into the present.
Elsa alone is not the Fifth Spirit. Anna alone is not the Fifth Spirit. Together, they form the bridge between memory and action, spirit and humanity, past and present. Only together do they fulfill what the Fifth Spirit truly is.
