Orphan fisher‑girl Elena goes out to pull in her nets and accidentally snags merman Finn while he swims at play. Helpless and trapped in the net, Finn calls for help. Elena takes pity on him and nurses him back. When Elena plunges into the deep sea, Finn fills her mouth with a breath of mysterious power to bring her back to life. Their hearts connect as they hold each other beneath the waves — a fateful encounter written by destiny.