In 'The Flash: Season 3, Flash is seen defeating Savitar and snatching the Philosopher's Stone which gave him immense powers. Now he has to dispose it so that it doesn't lands in evil hands. Henry Allen helps Barry to throw the Philosopher's stone above where Barry sees his girlfriend getting killed by Savitar
Early in this month of December, the DC Superhero fans have gotten quite a good appetizer when "Arrow" and "The Flash" did two crossover episodes. And, now the much-anticipated entrée was about to be served.