In April 1927, China was in a bloody storm. Chiang Kai-shek, who betrayed the revolution, colluded with imperialist forces and massacred Communists and innocent people. Faced with difficulties, some people left the party in newspapers, some defected to the enemy, and some became corrupt and degenerate. The Chinese Communist Party, which had grown to more than 59,000 members, faced severe tests. It became an urgent task to establish a central-level supervisory agency to supervise party members and purify the organization. Wang Hebo, then secretary of the All-China Federation of Railway Trade Unions, and Yang Baoan, a member of the Guangdong Supervisory Committee of the Communist Party of China, submitted a motion to the Fifth Party Congress in the name of the five representatives. After overcoming various difficulties and interferences, the First Central Supervisory Committee of the Communist Party of China (the predecessor of the Central Commission for Discipline Inspection) was finally established. Through real and touching stories and rich and vivid characters, "Loyalty and Betrayal" composes a glorious chapter about the establishment of the first Central Supervisory Committee and the ten supervisory members' loyalty to their duties and performance of their duties for the Party. It focuses on creating the heroic images of Wang Hebo, the first chairman of the Central Supervisory Committee, and Yang Baoan, the vice chairman, and enthusiastically praises the fearless revolutionary spirit of the older generation of the Party's discipline and supervision cadres, who are unyielding, upright, loyal to the revolution, and ready to die.