Younger sister Maureen has found the perfect replacement for when her sister Wendy is off hanging with her friends or having yucky smoochie time with her boyfriend Mason... another stuffed animal, of course. But as Maureen isn't always too careful with her things, or her sister's things, will this stuffed sister plan become spoiled before it even begins? Plus: more sibling rivalry, more pranks, more bonding time with the sisters who depending on the time of day may love each other or want to kill each other!