Chase is stressed trying to finish a paper, when he should be celebrating his birthday. Zoey searches for a present and decides to have his grandmother, whom she finds out he is close to, come visit, but she falls ill. At the end of the episode, we learn that she was more ill than lead on. She died on her birthday (As well as Chases', they shared the same birthday).
A good episode, the subplot was stupid so I did not feel the need to mention it, but the rest was good, very interesting ending, I thought. Grade- easy A+