The Blue Sweater is about a promise. A girl tells her little brother, Unni, she'll knit him a blue sweater by the next full moon. The next day, Unni wanders into the forbidden forest and finds something that pulls him into a long journey. He returns home on the night the promise is due, which is Raksha Bandhan, the festival that celebrates the bond between siblings. Only now, what he found in the forest has quietly changed what that little blue sweater means.