The End Game is a story about family, international intrigue and espionage. While taking care of his wife, during her struggle with breast cancer, Adam Stepowski investigates money transfers from an American manufacturer to numbered Zurich bank accounts of phantom Soviet, Russian and Polish companies, and tries to expose the faces behind them. When his family is threatened, the investigative lawyer realizes that he must have come close to some secret knowledge, and is forced into a dangerous game against shadowy opponents at home in the US, across Europe, in Russia, and in Kazakhstan. Stepowski uncovers a clandestine network planning a terror attack which, if not stopped, would lead to a global madness. To prevent it, Adam allies with unexpected partners.