Two men: one human, one alien. Both alone in exile, yet not alone. Both geniuses, yet blind to what they'd had until it was stripped away. Both capable of the highest acts of mercy... and the deepest cruelties. Their paths are about to cross in a remote village, long ago and far away... And the universe will never be the same again. First episode in a crossover series.

For the second summer vacation trip, the SOS Brigade visits the island of Rokkenjima. Instead of simple fun, Kyon and Haruhi find themselves pulled into a long abandoned game board. Knowing the fate of the island, they must race to solve the mystery.