This is an automatically translated description

 Rachel and Kirsty met on a ferry to the Rainbow Island and became friends right away. On the island, they met the fairy Ruby, who told them about the Fairyland, where the bright colours had disappeared due to Jack Frost's spell. The girls promised King Oberon and Queen Titania to save the magical country. To do this, Rachel and Kirsty have to find the seven rainbow fairies. Will the friends manage to outwit Jack Frost?