Plot summary
The FBI learns that the man who built the bomb for the suicide bomber was a member of the Covenant of John cult and has built a second bomb. Henry is brought in to speak to him. The FBI begin interviewing surviving members of the cult. Elizabeth, on a trip to African nations, discovers that Foreign Minister Chen from China is ahead of them throughout their itinerary, and that he is convincing other countries to give their power contracts to China. She and her team are grounded in Togo by a plane malfunction. Learning that Togo has rich phosphate deposits, she convinces the Togo government to set sustainability and women's education requirements as a condition for allowing China to mine there. One of the cult survivors who had been interviewed by the FBI makes a call, and a truck loaded with the second bomb is put into motion.
Credits
Adapted from Wikipedia contributors, Madam Secretary season 3. HTML formatting and reference markers removed.