Things are back to normal. Well, as normal as life can be with Haruhi. So of course she wants them to enter… a baseball tournament?! But when the game doesn’t go the way Haruhi wants, danger lurks just around the corner. They’ll have to win, or else.

The SOS Brigade is going on a summer retreat. And what better way to enjoy a summer retreat than on a deserted island? But if the mysterious island mansion doesn’t live up to Haruhi’s expectation, will she cause another incident? Or something worse?