Lizzie Petrie doesn't know how people manage parenting, friendship, or life. Watching four children is hard work. This is something Lizzie's wife, Sarah, knows about. She's been doing it for six years. As the kids grow older, Sarah is reaching her breaking point and pleads with Lizzie to do more to pitch in. Lizzie is certain she can do it on her own. Lizzie is wrong. When Sarah goes back to work full-time, Lizzie...