Shanghai 1937. It's been 3 months since Japan launched the invasion of China and Japanese forces have to take down the Si Hang Warehouse without further delay. As the Japanese army closes in, 400 soldiers stay holed in the warehouse to defend the city at all cost, in an epic battle that will last 4 days and 4 nights. The fighters include a ragtag band of brothers who'd managed to successfully dodge military service; now they're forced to fight, literally, for their lives. With the battle playing out in full view of both the expat Americans and Europeans living across the Su Zhou River, and the local Chinese civilians, the battle of the so-called Eight Hundred Heroes made world headlines; it was the first to be broadcast live around the world.