The SOS Brigade is sailing on the sea, headed for a remote island for a three-night stay planned by Koizumi. The purpose? To look for any unusual things (like always).

 

One day earlier… Haruhi announces the first overnight trip of the summer vacation for the SOS Brigade. Koizumi’s rich relatives had bought a small island and built a villa there. Haruhi promotes Koizumi for his help, assigning him the name of Deputy Chief.

 

Back to the present… Koizumi is talking with Kyon, comparing fictional detectives in novels to Haruhi. The works of literature will place the detectives in one mystery after another, to create a story. He explains that Haruhi actually wants to be thrown into such a world. Koizumi says that in reality, mysterious things don’t just appear like that. However, he also says that the island that they are going to is a perfect place for a murder to occur… (What a giveaway!)

 

When they arrive, Koizumi greets his friend, who replies with, “It’s been quite some time.” This statement is very important! The butler, Arakawa, and the maid, Sonou Mori, are the ones who greet them. They then take another half-hour boat ride to the villa.

 

When they reach the villa, they are greeted by the master of the manor, Keiichi Tamura. Haruhi asks if anything unusual has happened to the villa, but as it is only a few days old, nothing has. The group spend the day on the beach (Nagato spends the whole time reading) and finally return at dusk. After dinner, they return outside and light fireworks. And after that, they went bushwalking.

 

It is raining heavily the next day – not a very good sign. During breakfast, Kyon notices that Tamura is absent. The butler explains that he is not a morning person and has a hard time waking up. Haruhi complains about the typhoon, which reminds Kyon that there had been no forecast of it, and thinks it’s probably because Haruhi self-consciously wished for it to happen.

 

The next day, it is still raining. Haruhi want to have a pillow fight, but the butler shows up with a troubled look on his face. Yutaka is missing and his bed looks undisturbed. Keiichi is also troubling him. Arakawa had tried contacting him through the intercom but he hadn’t replied. Koizumi suggests they check Keiichi’s room, but it is locked and only the master has the key.

 

Haruhi runs upstairs to where the master’s room would be, but there are multiple doors and she doesn’t know which one is it. Koizumi runs past, heading straight for the master’s room. This is another important piece of information. Koizumi tries to open the door, but he cannot. He then suggests that they break it down. When they do break it open, they find the master lying on the floor on his back, a knife stuck in his chest.