Ambrose Sokolov and Lux Samaras used to be best friends right up until Ambrose made a huge mistake. That mistake ripped them apart and kept them apart for years.
It isn't until they are abducted by the Drakos and inadvertently crash in the Sahara Desert that they are forced to work together.
That and the very demanding Pleiadean who is determined to bring them back together.
Why?
Because Kalbeliyas has a very good reason to want his connections to get along