Ep. 21: Big One answers distress signal from Kowloon but faces alien ambush

The Big One detects a distress signal originating from the complex, labyrinthine environment of Planet Kowloon. Upon arrival, the vessel is subjected to an unexpected assault by a hidden alien ship. This sudden attack severely compromises the Big One's situation, forcing the crew to seek immediate evacuation. Consequently, Sirius Platoon is left with only a dimensional rift as their sole means of escape from the hostile encounter. The episode highlights the sudden danger posed by the lurking enemy and the desperate tactical options available to the platoon as they navigate this critical survival scenario amidst the alien threat.

▶ Watch on Crunchyroll