Suburban housewife and mom Tara Gregson sometimes just doesn't seem like herself, and with good reason: She's living with dissociative identity disorder, a condition that causes her to shift between multiple identities without warning. Her loving husband, Max, copes with the situation as best he can, but neither he nor their teenage kids, Kate and Marshall, can be sure who will greet them when they come home: Tara herself, or "T," a flirty teenager; Buck, a beer-swilling Vietnam vet with a violent streak; Alice, a perfect TV mom right out of the 1950s; or other alter egos in this dark comedy created and written by Academy Award winner Diablo Cody ("Juno").