"Promise?" "Promise"

Moana form Hawaii is on college in New York to become a director. On a day he has to make a documentary about someone in New York. He decides to do it about a homeless girl he met named Kat. They fall in love but Mon is selected to be co-director for a movie that takes place in Hawaii. He has to leave but promises to come back for Kat. After 2 years, he comes back during one of the coldest winters New York has ever has. Kat seems dissapeared.