While traveling in disguise, Kim overhears a plot to assassinate Mahbub Ali and warns him, saving his life. He is then reunited with his lama and sent to help Hurree Chunder (Cecil Kellaway) keep an eye on two Russian spies posing as surveyors. When he finds Chunder murdered, Kim continues the mission by persuading the Russians to hire him as their servant. He is eventually unmasked and the lama is beaten up. When news of Chunder's death reaches the British, Mahbub Ali is sent to take his place. He rescues Kim and takes charge of the interlopers' papers, but when a Russian expeditionary force approaches, the spies attempt to overpower him and he is forced to kill them; then he and Kim start a rockslide which buries the Russian force. In the end, the injured lama finds his river (at least in his own mind), stumbles to it, and dies contentedly, after which Kim and Mahbub Ali ride off together.