Discusses the life cycle of baby seals.

When Saoirse and Ben's mother mysteriously disappears into the ocean, the two children go on an epic journey to find out the truth about her, and in the process, discover mystical secrets about both their mother and Saoirse herself. The film takes inspiration from the mythological Selkies of Irish folklore, who live as seals in the sea but become humans on land.

While Nana fixes their sailboat, which will take them out to sea where the seals live, Noah builds his very own seal friend on shore until a storm blows in and he must take cover.