The Winter's Snowflake

One night while Elsa sits at her window, she spots a boy. When Elsa opens the window she is surprised to learn that it is Jack Frost, the boy that used to help her control her powers. Jack tells Elsa that the Man on the Moon has chosen new guardians, and that Elsa is one of them. Pitch threatens the world once again. Can these new guardians save it? This is a Jelsa fanfict