Harrison, Cisco and Barry travel to Earth-2 to save Harrison's daughter. Barry assumes the role of his doppelganger, who's married to Iris. He then encounters alternate-Caitlin and alternate-Ronnie, who are Zoom's agents.
Barry, Cisco and Wells travel to Earth-2 to rescue Jesse from Zoom. Barry is surprised when he encounters Earth-2 Iris and Joe but is not prepared for meeting Caitlin and Ronnie's Earth-2 counterpart Killer Frost and Deathstorm. On Earth-1, Jay takes over Barry's duties as The Flash when a new metahuman Geomancer attacks Central City.