 Sandy s overbearing and obnoxious mother, Sofia "the Nana" Cohen, arrives in Newport Beach to celebrate Passover, but she also brings not only her unattainable attitude, but some bad news that she s dying from cancer. Meanwhile, Ryan searches for Marissa who has gone missing after inadvertently learning about her mother and Luke, and Ryan finds her in the most unexpected of places: at Theresa s house in Chino. Also, Summer tries to impress the Nana by knowing the traditions of Judeaisum, while Jimmy and Hailey take a step forward with their own newfound romance.