Complex sentence: The Solos draw back from that alliance when they discover a plan to make the powerful Hapan Consortium an ally, namely by murdering the pro-Alliance queen and her daughter, long-time Solo family friends.
Split into simpler sentences: The Solos draw back from that alliance when they discover a plan to make the powerful Hapan Consortium an ally. Namely by murdering the pro-Alliance queen and her daughter, long-time Solo family friends.