Complex sentence: When a small group of Kheran heroes from Earth, known as the WildC.A.Ts, arrived on Khera, they were welcomed as heroes, but they quickly found out that Kheran society had changed over the years.
Split into simpler sentences: When a small group of Kheran heroes from Earth, known as the WildC.A.Ts arrived on Khera. They were welcomed as heroes, but they quickly found out that Kheran society had changed over the years.