Ling Ke is a time and space patrol. One day, while on patrol, she found that the warring States period was about to be disrupted, so she decided to go back to that time to relieve the crisis. Unexpectedly, in the process of crossing, Ling Ke was attacked by an inexplicable enemy. In the chaos of war, Ling Ke came to the 20th century and just fell into the courtyard of the boy's home, Shinsuke Nagahara (voice of Yashima Keiko). Ling Ke was attached to Xiaobai, the pet dog raised by Xiaoxin, and explained the causes and consequences of the incident to Mei Ji (voiced by Miki Takahashi) and Hiroshi Fujiwara (voiced by Hiroshi Fujiwara) through Xiaobai's mouth, so the family of three followed Ling Ke back to the warring States period in the 16th century, where they waited for them, in addition to novel and exciting experiences, there were endless dangers and ferocious enemies.
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