Mother and daughter bicker over everything -- what Anna wears, whom she likes and what she wants to do when she's older. In turn, Anna detests Tess's fiancé. When a magical fortune cookie switches their personalities, they each get a peek at how the other person feels, thinks and lives.

Years after Tess and Anna endured an identity crisis, Anna now has a daughter of her own and a soon-to-be stepdaughter. As they navigate the myriad challenges that come when two families merge, Tess and Anna discover lightning might indeed strike twice.