Kirstens father, Caleb Nichol, comes for a visit along with his new girlfriend, Gabrielle. 24-year-old Grandma Nichol has arrived. Kirsten finds her job in jeopardy, while Sandy considers making a change. Much to Ryans disappointment, Luke decides he wants a second chance with Marissa...but who will Marissa choose? Summer makes the moves on Seth, who wonders if her feelings are real.