The film tells the story of Chinese guerrillas fighting for the Allied cause in Burma during Early in World War II, Chungking schoolteacher Lin Yang is recruited to help with the dangerous mission of protecting the Allied supply line from Burma into China. In spite of the danger involved, her determination to help is strengthened when one of her young students is killed in a Japanese air raid. Some time later, she is part of a group of Allied representatives departing from Lashio, on a bus traveling the Burma Road back to China. A bridge outage forces them to spend the night in a monastery along the way, and during the night they watch in horror as a supply convoy of trucks is bombed by Japanese planes. The timing and accuracy of the raid brings them to realize that either one of their group, or perhaps the priest in the monastery, is really an enemy agent

During World War II, Chinese guerrillas fight against the occupying Japanese forces. A young woman is the secret leader of the villagers, who plot to rescue two downed Flying Tigers pilots, who are currently in the custody of the Japanese. The rescue mission takes on even more importance with the arrival of a Japanese general, which signals a major offensive taking place in the area.

Stunt driver Cliff Jordan takes a job with his old pal Jerry McGee, branch manager of an express trucking firm. Jerry is married to Mary, Cliff's former girl friend. Also working for Jerry is Pete Simmons, son of the owner Al Simmons, and office secretary Jane Chandler, who is Pete's sweetheart. Before long, Cliff has made enemies of Pusher Wilks, a trucker whose run he takes over, and also Pete, whose girl he is trying to take over. Pusher sabotages Cliff's rig at every opportunity causing several near-fatal accidents.

After being run out of town after town for trying to sell worthless stock, two con artists breeze into the small town of Chesterville, where they find themselves accused of kidnapping a young boy to whom they offered a ride. When that misunderstanding is cleared up, the two conmen hatch a plot to unload all their worthless paper on the gullible citizens of Chesterville.