Due to a congenital disorder, 31-year old Otake Teruaki (Kusanagi Tsuyoshi) has the intelligence of a 10-year-old. He is also afflicted with autism. Teruaki can recite the long list of Tour de France winners or memorize the exact words of someone, but is unable to answer abstract questions such as "How's it going?" Thus, he tends to be misunderstood by others, and has difficulty keeping a job for a long time. He has just quit his job at a store that sells bento (lunch box).

Teruaki lives with his mother Satoe (Nagayama Aiko) and younger sister Rina (Motokariya Yuika). In his spotless room, Teruaki likes to watch Tour de France videos and write three-line letters to his childhood friend, Miyako (Karina).

One day, Miyako introduces Teruaki a job as a zoo keeper at the zoo she works at. Accompanied by his mother, Teruaki has an interview with the director of the zoo. He will be working for two weeks to see what it's like. Under the direction of an experienced zoo keeper, Kubo Ryosuke (Ohsugi Ren), Teruaki will be working at the petting zoo. When he is handed a broom to clean up, he doesn't know what to do with it and just stands there. He has no idea where to clean and how. Miyako advices Ryosuke to "be sure to give him clear directions."

After a week working at the zoo, Teruaki is taking care of a guinea pig. In the zoo, a clown is performing with balloons. When a balloon breaks, Teruaki is startled at the sound and accidentally lets the guinea pig loose, and Teruaki goes into a panic.

Cast
* Kusanagi Tsuyoshi as Otake Teruaki
* Karina as Matsuda Miyako
* Sasaki Kuranosuke as Otake Hideharu
* Motokariya Yuika as Otake Rina
* Megumi as Oishi Chiaki
* Tanaka Kei as Miura Hiroyuki
* Kato Koji as Hotta Joji
* Asano Kazuyuki as Kameda Tatsuhiko
* Moriguchi Yoko as Otake Maki
* Katsurayama Shingo as Kawahara Masaya
* Suga Kenta as Otake Kotaro
* Kohinata Fumiyo as Koga Toshio
* Ohsugi Ren as Kubo Ryosuke
* Nagayama Aiko as Otake Satoe