A gate to another world opens in Mikado City, and monsters called Neighbors emerge. Border Defense agent Osamu Mikumo fights them with his 'Trigger.'
Season 1
9.0
Season Plot
A gate to another dimension has burst open, and from it emerge gigantic invincible creatures that threaten all of humanity. Earth's only defense is a mysterious group of warriors who have co-opted the alien technology in order to fight back!
