El rescat de la selkie

A silver sealskin washes up on the shore of a Norse village just as the seals start behaving strangely. Aqua and her friends decide to go talk to them and discover that this skin belongs to Annika, a selkie who is missing. They learn that selkies are seals who, by shedding their skin, can turn into humans, and since Annika hasn't been able to get her skin back, she remains in human form and cannot return to the sea. That is when Aqua and Valentina decide to become human and go to help the little selkie. They are lucky to find her in an orphanage, but this luck plays a trick on them when they too end up being held there for not being able to prove that they have known relatives. How will they get out of this? Will they manage to recover Annika's skin so that she can return to the sea?