Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives.
The crossover starts on The Flash S05E09 Elseworlds (I) and Arrow S07E09 Elseworlds (II).
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Episode Name:Elseworlds (III)
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Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives.
The crossover starts on The Flash S05E09 Elseworlds (I) and Arrow S07E09 Elseworlds (II).