There are lots of laws/rules
in her world; one of them is Law #52: "If humans save merpeople from some danger, this mermaid/merman turns into a human and
must live with the family of the human(s) that rescued her/him for 70 "seadrops" (7 days)".
Following Law #53: "She/He
also must change the life of the human(s) that saved her/him or any member of his family in a positive way".
This time, is Marina's
turn to change the lives of young Alan and his family, as she discovers the human world in a whole different way than she
expect it...