In the First World War, the Australian Light Cavalry fought with the British Army in Palestine against the Turkish and German coalition forces. After two defeats in Gaza, the British Army prepared to launch an attack on Bercy, which had abundant water resources. This was a defensive town of the Turkish Army, where the brave light cavalry wrote a legend of man and horse. Bercy was an important position of the Turkish and German coalition forces, and it was crucial for the British Army to occupy this place. But Bercy stood in the desert, and water sources were very important for the soldiers to fight in the desert. Even if the soldiers broke through this place, if the enemy destroyed the water source, the entire team would still be wiped out. In addition, the Turkish army had tight defense, so it was very difficult to break through Bercy. Under the instructions of his superiors, Lieutenant Colonel Boucher led the 4th Cavalry Regiment to support the front line. They were preparing for war in the barracks. The soldiers who had been away from their hometown for 3 years often showed their deep longing for their families when they were free from training. The squad composed of soldiers Frank, Tess, Skdi, and Wes was very brave on the battlefield, and their feelings were as deep and close as brothers. Frank was injured in a mission and sent to the hospital for treatment. He died due to uncontrolled infection, and his brothers were extremely sad. The organization sent a new soldier, Dave, to replace Frank. Tess was not very welcome to this young and immature new member and doubted his ability on the battlefield. But Dave proved his strength to everyone in daily training. Not only was he good at riding horses, but he was also a sharpshooter, which made his comrades admire him very much. The Fourth Cavalry Regiment received an order from their superiors to blow up the enemy's railroad tracks and cut off their contact with the outside world. This was Dave's first time to participate in a battle. They successfully completed the mission, but the huge explosion attracted the enemy's army. They had a fierce gun battle with the enemy. Just as the soldiers fired fiercely at the enemy, Dave did not fire a bullet. It was very difficult for him to shoot people. The members of the squad were ashamed of Dave's behavior, thinking that he was a coward and no longer paid attention to him. Dave also felt guilty. His brother died on the battlefield. He didn't want to see anyone die, even the enemy. His psychological barrier prevented him from fighting normally. In an air raid, Dave was seriously injured in order to protect the warhorse of the squad members. He was sent to the hospital for treatment. He proved to his comrades that he was not a coward and developed a deep affection with the squad members. During the treatment, he met the beautiful nurse Amy, who took meticulous care of her, which sparked the spark of love between the two. Because he was unable to fight due to his psychological barriers, the organization decided to arrange for him to go to the medical team to rescue the wounded and withdraw from the front-line battlefield. After careful arrangements by the organization, false information was sent to the enemy. A battle of wits and courage was about to be staged in Belsey. On the battlefield, the enemy and us had a fierce battle. Seeing his brother fall, Dave, who was preparing for rescue work in the rear medical team, rushed to the battlefield. In order to protect his brother, he used his body to block the grenade thrown by the enemy and was seriously injured. After the soldiers fought bravely and tenaciously, they won the battle. Dave once again proved his courage. After the war, he and the beautiful nurse Amy lived a happy life.