Graves hasn't taken a vacation in years. He is very stressed and grouchy. Aurors hide under their desk just at the mention of his name. So one day Picquery sends Graves on a vacation to a remote tropical island and don't you dare show up in the office in next two weeks and I will know if you won't go! Except workaholic Graves hates vacations. And 100% city boy Percy hates nature with a passion. A remote tropical island = hell. He gets sunburnt, something bites him, he discovers he has about dozen allergies, he gets food poisoning etc. But this vacation might still be salvaged.... there is something fishy going on in the hotel. Now that gets Graves' investigative spirit going.