Sawajima Yuichi—a time-traveling reporter working for Time Scoop Inc. Journeying through the ages, he gathers footage of people who didn't make it into the history books. This time, he meets some tokitaiko-uchi, who would let people know the time by striking a drum. Until the late 19th century, Japan used a seasonal time system: Day and night were each divided into six equal periods between sunrise and sunset. To stay accurate, the tokitaiko-uchi used incense clocks. In one castle, three of them worked in shifts, but when one suffers from night blindness, he finds himself in danger of losing his job. Watch Sawajima's report to see how things work out!