Initially discovered in egg
form on LV-426 in the year 2122 the xenomorphs
were not encountered again until 57 years later, when scavengers from a nearby colony, Hadley's Hope, came across their crashed ship. A single infection led to more, with each new xenomorph incubating within a host body, devastating the colony and provoking a military
response from colony owner Weyland-Yutani.