Complex sentence: He goes there with fellow Legends Mick Rory and Amaya Jiwe plus Felicity and Cisco to kidnap a Dominator for information and, while successful, the three Legends and their alien captive are taken prisoner by federal agents.
Split into simpler sentences: He goes there with fellow Legends Mick Rory and Amaya Jiwe and Felicity and Cisco to kidnap a Dominator for information. Although they are successful, the three Legends and their alien captive are taken prisoner by federal agents.