Sakamoto enjoys a quiet life in retirement with his family. But one day, an old colleague demands he return to the assassin world — or face consequences.

With the poison-wielding hitman taken out, the Sakamotos head to their next attraction, where they're ambushed by Dondenkai Ltd's ultimate assassin duo.

While manning the store alone, Lu gets kidnapped by a mysterious group. Sakamoto and Shin pursue her but are halted by an invisible assassin.

The crew faces Wutang in a high-stakes casino showdown to learn who issued Sakamoto's bounty. Meanwhile, X sends a group of vicious assassins their way