Ep 16. World's Finest: Part 1

Batman arrives in Metropolis through a mysterious portal and quickly crosses paths with Superman. When The Joker and Lex Luthor join forces to plan the most heinous crime of all time, the dynamic duo must unite to stop them. As the two superheroes work together, their different approaches to crimefighting clash, but they soon come to realize that their strengths combined make them an unstoppable force for justice. With Lex Luthor funding The Joker's schemes, the evil pair continues to stay one step ahead of Batman and Superman. But when they hire the mercenary, Harley Quinn, their plans take a dangerous turn. Can the World's Finest team stop them before it's too late?