ACCORDING TO LEGEND, ONCE, IN A CONFEDERATION OF SEA KINGDOMS, MAGIC WAS ALIVE AND COULD HARNESS THE POWER OF THE OCEAN. Daisy and the other members of the Five O'Clock Club have defeated a formidable enemy, but the journey to find the missing botanists is still at its beginning. After sneaking onto the mission ship to the Amazon, they will face incredible danger on the open sea, with the Harbingers on their trail. There is one way to salvation: to find the mythical Possibility Place, a mysterious city hidden beyond the sea and forgotten by humans. But beneath the waves, something wild and magical stirs. If Daisy wants to save the magical world, she must muster her courage and determination – and earn the trust of a new friend.