塔拉(托妮·科莱特 Toni Collette 饰)辛勤抚养膝下的一儿一女,他们分别是马歇尔(凯尔·吉克瑞斯特 Keir Gilchrist 饰)和凯特(布丽·拉尔森 Brie Larson 饰),在亲戚和朋友的眼中,塔拉无疑是一名非常称职的好母亲。爱丽丝的个性保守又念旧,她将自己的全部兴趣都放在烹饪上。布克脾气火爆性格大大咧咧,是个名副其实的“女汉子”。T仿佛是还没有长大的大女孩,向来离经叛道的她不将任何的规则放在眼里。 你们看错,以上四位个性可谓是截然不同的女性,她们是住在同一具躯体里的四种人格,而这些人格中的主人格当然是塔拉。于是,一个奇妙的场景出现了,上一秒,塔拉还是个贤惠的妻子,下一秒,她就已经跨上自己的机车绝尘而去。有这样一位人格分裂的母亲,塔拉的孩子和丈夫们每天都生活在惊喜和惊险之中。Tara, a professional woman, artist, wife and mother, diagnosed with Dissociative Identity Disorder (formerly referred to as MPD - Multiple Personality Disorder) stops taking her medication and struggles to unite her "alters" (alternate personalities.) As the seemingly disparate portions of her psyche seek to combine and peaceably co-exist, Tara, her husband, their kids, family and friends deal with the fallout, life and various morons who do not know their schizophrenia from their MPD.