Release Message: Mr. Conductor walks through a Pedestrian Time Tunnel to get to the Permian Time Period, where they meet Deon Dimetrodon, who has never met a dinosaur or pterosaur before.
Description: This novel contains the short story, "Endless Eight" in which Haruhi Suzumiya creates a time loop because she feels her vacation is not yet complete. In chapter one, the SOS Brigade are enjoying the last two weeks of summer vacation. Eventually, they realize that this time period has been repeated 15,498 times in an infinite time loop; once the vacation ends, Haruhi invariably feels there is something more she wants to do, and the two weeks restart. In chapter two, the Computer Research Society challenges the SOS Brigade to a computer game tournament, hoping to reclaim the computer Haruhi extorted from the Computer Research Society earlier in the year. The game is entitled The Day of Sagittarius III, a 2D real-time strategy battle simulator where the players control spaceship fleets. Eventually, Nagato manages to find out that Computer Research Society club members are cheating and is able to block and use it against them, thus winning the game and some laptops for the SOS Brigade club room. In chapter three, while skiing during winter vacation, the SOS Brigade are trapped by a mysterious blizzard, and take refuge in a deserted mansion. Yuki is cut off from the Integrated Data Entity, but according to Itsuki, Haruhi is absolutely not the one behind this. They have hallucinations and use them as clues to solve a math problem carved on the door, which Itsuki believes is the only way to get out.