While preparing for battle, Clarke (Eliza Taylor) and Lexa (guest star Alycia Debnam Carey) have a heated discussion.
Mary’s (Adelaide Kane) mother (guest star Amy Brenneman) returns to advise Mary that her throne is in jeopardy.
After assigning tasks to each of her friends, Caroline (Candice Accola) attempts to deal with her current situation as reality begins to set in around her.
Clarke (Eliza Taylor) begins to question Lexa’s (guest star Alycia Debnam Carey) leadership decisions.
Dean (Jensen Ackles), Sam (Jared Padalecki) and Castiel (Misha Collins) deal with Cain’s (guest star Timothy Omundson) return.
After the nuclear explosion separates Ronnie (guest star Robbie Amell) and Dr. Stein (guest star Victor Garber), Barry (Grant Gustin) and the team believe both men are safe.
It’s Jeremy’s (Steven R. McQueen) last day in Mystic Falls and Elena (Nina Dobrev) puts on a brave face as they reminisce about their past.
Tensions between Clarke (Eliza Taylor) and Abby (Paige Turco) come to a head after Clarke crosses the line.
Oliver (Stephen Amell) is thrown by the changes within Team Arrow.
ghost starts killing people through various electronic devices.