Suzuki is a man who leaves his job as a schoolteacher in order to infiltrate an underworld organization and take revenge on the person who murdered his girlfriend. Suzuki will meet different assassins, Cicada and Whale, and the story will show how their lives will interlace. Asano will play Kujira (lit. “whale”), a contract killer who specializes in observing his targets, gaining insight into their state of mind and eventually manipulating them into committing suicide. Yamada’s character Semi (lit. “cicada”) is a fellow hitman who takes a more direct approach, utilizing his expertise with knives. ~~ Adapted from the novel "Grasshopper" by Isaka Kotaro.