Sapphire's father mysteriously vanishes into the waves off the cornwall coast where her family has always lived. She misses him terribly, and she longs to hear his spellbinding tales about the mer, who live in the underw...Sapphire's father mysteriously vanishes into the waves off the cornwall coast where her family has always lived. She misses him terribly, and she longs to hear his spellbinding tales about the mer, who live in the underwater kingdom of ingo.