Complex sentence: Meanwhile, Felicity, Curtis Holt and Cisco try to hack into the Dominators' mainframe using a piece of their technology, recovering a necessary device with the help of Barry and Kara to locate the captives.
Split into simpler sentences: Meanwhile, Felicity, Curtis Holt, and Cisco try to hack into the Dominators' mainframe using a piece of their technology. With the help of Barry and Kara, they recover a necessary device to locate the captives.