Earth Day tells the tale of a group of ex eco-crusaders who find themselves being systematically slaughtered as the one year anniversary of the tragic Earth Day death of their leader, Pixie, approaches. Detective Trent Torrance suspects only one man: Hassan, who grew up in the most extreme terrorist sect in all of Pakistan, only to be expelled for "going under the Burga" and embracing the forbidden art of Women's hair care. Together with Priscilla, Pixie's nihilistic twin sister, they strive to prove Hassan's innocence, while trying to avoid her insanely overprotective plastic surgeon father Dr. Percival Peever, and his plastic surgery casualty of an assistant, Lenora.