(recap taken from abc.com.) All the residents are engaged in a surgical contest that is so intense, none of them have left the hospital in the last two weeks.
Izzie is 26 points behind the other residents as she's mostly been watching, and not participating in, surgeries. So when a man with a sprained ankle comes in, Izzie decides it's a "medical mystery" worth 80 points. She snatches up the patient, leaving Cristina, Alex and Meredith with nothing -- that is, until a car drives up. The driver (Jason), who drove straight here, says they were out camping and he tried to pet a bear cub, which led to his brother being mauled by the mama bear. Cristina is helping the injured brother out of the car when his intestines spill into her hands. The driver is not hurt, other than a severely bitten hand. High on pain meds, he tells Meredith that his new wife was his "rebound girl." The wife tells Meredith she never expected anyone as wonderful as him to marry her. She herself has a torn scalp, which proves to be easily stitched up.
During the surgery on the bear-attack victim, Alex and Cristina fight over who gets to stitch him up, since it's a point a suture, so Miranda says they can both do it.
Meredith hands George the points-rich scalp suture because she wants to work on the man with the hand injury (Jason's character). She suspects that his sudden marriage and his irrational impulse to touch a bear cub might mean he has a brain tumor. George feels she's also blowing a minor case out of proportion like Izzie -- or using it as a reason to see Derek.
Meanwhile, Meredith examines her patient and when she determines that he's lost most of his peripheral vision, she triumphantly shouts "Tumor!" The man thinks she's trying to make him feel better about doing something as stupid as touching a bear cub and she explains that his other symptoms -- including making sudden, rash judgments -- are indicative of a tumor. His new bride takes offense, realizing she's one of those rash judgments and insists they do an MRI to prove Meredith wrong.
Meredith shows George the brain scan that proves she was right about the tumor, partly to gloat but mostly to ask him to take the scan to Derek for her.
The bear-attack victim crashes and they can't save him. Richard informs the brother, who is devastated to have caused the whole situation. When Meredith tells him he has an inoperable tumor, he responds, "Good. I killed my brother." The wife asks Meredith if she's just a symptom too, like the bear cub. Meredith says she's the only one who can know that for sure.
Because she's solved a major medical mystery, Meredith wins the contest. Her prize is a sparkly pager, which gives her the right to take any surgery she wants from anyone else.
Meredith researches the kind of tumor her patient has and wants to do a clinical trial -- but she needs a neurosurgeon to oversee it, so she asks Derek. She tells him this is about saving lives and not about the two of them. And she finally starts talking to her therapist.