On Oasis Colony No. 7, The exiled scholar Karen's broadcast broke the calm and pointed out that the Holy Emperor was a war criminal. Due to this turmoil, the mechanic Shao Meng accidentally learned of his parents' old relationship and the crisis of the purification fleet, and fled with the old mechanic. On the way, he joined the Free Alliance, witnessed the atrocities of the empire, and finally broke out on a smuggling ship. The war against the Holy Emperor began.