The time travelers arrive a few days before the Battle of the Little Bighorn. Dr. Newman is captured by the Indians and taken to their camp. Dr. Phillips is found by a young courier and goes with him to the camp of the 7th Cavalry. Dr. Phillips tries to convince Lt. Col. George Armstrong Custer to rescue Dr. Newman, which Custer will not do. Failing that, Dr. Phillips tries to convince Custer that his regiment will be totally wiped out so he should not go to battle. Custer has him arrested to prevent him from telling this to the rest of the troops. Meanwhile, the Indians threaten to execute Dr. Newman, but for his bravery in facing this, he is adopted by Sitting Bull. Dr. Newman convinces Sitting Bull to not attack the soldiers but to talk peace. Dr. Newman is sent to convey the message of peace to Custer. Custer has Dr. Newman arrested, but Dr. Phillips has already escaped. Sitting Bull remains in his tent for the duration of the battle, waiting for Custer to come talk peace.