TR opposes his old friend Taft for the 1912 Republican nomination. When Taft wins, TR runs for president with his own Progressive Party. Despite enormous popular support, he loses to Democrat Woodrow Wilson. TR, now 55, retreats to the jungles of Brazil for two years for what becomes the most harrowing expedition of his life. His four sons join the World War I effort; shatters TR. Nearly six months later, he dies in his sleep at Sagamore Hill.