Supergirl has finally brought Reactron back to New Krypton so he can be held accountable for murdering her father, Zor-El. While the debate about what to do with him rages among the people of New Krypton, the planet's ruler - and Supergirl's mother - remains unsure. Should Alura have Reactron executed? And will Supergirl allow it to happen if her mother decides to go that route?