With his fishing plans abruptly cancelled, impulsive teenager Fly finds himself stuck with Stella, his little sister, and precocious cousin Chuck at Aunt Anna's house. As one thing leads to another, the situation will take an unexpected turn when the kids chance upon the boathouse of the eccentric scientist, Professor MacKrill, and Stella accidentally drinks a yellowish potion. Now, as the children end up stranded in the deep blue sea, they only have 48 hours to find the antidote. Will the young adventurers remain fish forever?—Nick Riganas
Three children accidentally get turned into fish after drinking a potion made by an eccentric scientist. When the kids end up in the sea, they must find the antidote within 48 hours or remain as fish forever.