Elsie Schneider has a reputation for being a tattletale and liar among her peers at school. When Annie Browne moves to town in September of 1918, Elsie is determined to make Annie her best friend, but Annie quickly agrees with her classmates that Elsie is obnoxious and soon joins in teasing and avoiding her. When Elsie dies from the Spanish flu, her spirit lingers on, determined to be Annie's best friend and get revenge against those who made her life miserable.