Sondra, an attractive weight loss doctor in her 30's, looks down on people she feels are not at her level. She especially dislikes Jeanie, the medical office receptionist. Jeanie, a heavyset single mother of two, cannot be separated from her beloved chihuahua Bella. One day, Sondra falls and is knocked unconscious only to awaken in the body of Bella! She learns many life lessons as a dog and realizes her life wasn't as perfect as she once believed. Will Sondra return to her snobby self or will she spend the rest of her life in the body of an adorable chihuahua?