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The story begins in the early Showa era of the 20th century. A mysterious old man on a train relates the disappearance of his older brother three decades ago, near the 12-story Ryouunkaku tower that once stood in the seaside town of Uozu, Japan. The mystery revolves around telescopes, peep shows, and the blurred boundary between reality and dreams.
"After Yuu finds out the past and circumstances of Adachi, he makes a single decision in order to save him."
During the month of October of his third year in high school, Koyomi Araragi is introduced to a transfer student named Ougi Oshino by his underclassman Kanbaru Suruga. Ougi tells Koyomi that she has something she wishes to consult with him. When she draws the map of Naoestu High School, she finds something peculiar on there. This discovery reveals a tale that wasn’t meant to be told, and this makes Koyomi’s high school life totally different. This is the story that brings to light “what” makes Koyomi Araragi. This is the story that reveals the “beginning” of everything.
Morimiya Yorito is a normal student who has an abnormal obsession for the sky. One day, he meets a strange girl named Shihou Matsuri who shares his interest, but as fate may have it, she isn't a human; Matsuri is a Yaka -- a "woe of the night" -- who is immortal and cannot stand the sunlight. A strange man is chasing Matsuri, to use her powers, so Yorito decides to help her hide. What are the strange man's plans, and what secrets does Yorito's sister hide?
August 1998. At this moment, serial bomber Meruka Kuramitsu is certain of victory. Flip a switch. In the ensuing explosion, Shiki Ryougi’s body will scatter into pieces. Can Shiki survive the battle against this person with precognitive power?
After returning to Hangzhou after two adventures in Nangsha, Wu Xie receives a call from his childhood friend Lao Yang who he hasn't met for a long time. He proceeds to describe to Wu Xie his experience in the backland of Qinling Mountain three years ago. He intends to invite Wu Xie to visit the ancient relics there again. During their adventure, Wu Xie and Lao Yang witness a huge Hucho taiman, a grand underground fall, a myterious old tree of millions of years old, etc. What's more surprising is that Zhang Qi Ling, who has been elusive, helps Wu Xie in secret.