Flash vs. Arrow

Sara Novak is an introverted college student with a few skeletons in her closet. Shying away from classmates, she prefers to spend time with Vern, an older comic store owner who shares her passion for mind games and riddles. But when the riddles she solves lead to the deaths of those around her, she realizes the riddles are more than a simple game.....

Keiko does chores in her father's Chinese restaurant in New Zealand, but dreams of becoming a brilliant sushi chef and winning the boy of her dreams.

A spin-off from The Vampire Diaries and set in New Orleans, The Originals centers on the Mikaelson siblings, otherwise known as the world's original vampires: Klaus, Elijah, and Rebekah. Now Klaus must take down his protégé, Marcel, who is now in charge of New Orleans, in order to re-take his city, as he originally built New Orleans. Klaus departed from the city after being chased down by his father Mikael, while it was being constructed and Marcel took charge. As Klaus has returned after many years, his ego has provoked him to become the king of the city. "Every King needs an heir" says Klaus, accepting the unborn child. The child is a first to be born to a hybrid and a werewolf.

A man named Sylvester Pemberton tracks down Chloe and tells her he knows about her team of superheroes and needs their help. However, before he can explain who he is, he is attacked and killed by Icicle. Clark and Chloe's investigation leads Clark to the former headquarters of the Justice Society of America, where he meets up with Doctor Fate, Hawkman, and Stargirl.

Crisis on Infinite Earths is the name of the sixth annual Arrowverse crossover event between Supergirl, Batwoman, The Flash​​​​​, Arrow, and DC's Legends of Tomorrow.