DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine; Barry realizes the only way to stop DeVoe is to allow his friends to help; Barry is reluctant to risk his friends' lives and considers taking on DeVoe solo.
When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry realizes the only way he can stop him is if he allows Cisco and Caitlin to accompany him into the facility. Still shaken by Ralph's death, Barry isn't sure he wants to risk any more of his friends lives and considers taking on DeVoe solo.