Stella has a feeling that her life in Tacoma is about to turn around-just like her Panda Express fortune cookie promised. She'll finally make friends, and maybe have a little less generalized anxiety about big things, like her absent mom, and small things, like food touching other food on her plate. Her hopes for a friend-filled, anxiety-free future are quickly overshadowed when her Dad offers up an odd souvenir from his Vegas business trip: his new fiancée, Whitney. A few short weeks later, Stella and her brother find themselves staying in Whitney's Las Vegas house. But Stella isn't ready to accept her new life in the desert just yet. It's going to take some help from the stars-and her soon-to-be stepsister-to get this wedding called off once and for all.