A murder occurs of a promising high school baseball player. His younger brother Shinya becomes the prime suspect. Private detective Koichiro is hired by their father, Saburo Moroka. To prove Shinya's innocence, Saburo, Koichiro, and Koichiro's pet dog Masa work to uncover the real killer's identity. At the same time, there is a case at a giant drug company named Mitsutomo Pharmaceuticals. Yuki bears a grudge against the company for... see more