The Flash Rescues Arrow And Diggle From Vigilante In Invasion Clip

The Invasion! will bring the various heroes of the CW DC universe together for one common cause, but that doesn't mean the journey is going to be a smooth one. Just ask Diggle how he feels about it after he stops vomiting.

That sudden sickness is thanks to Barry's use of the speed force, which gets Diggle and Oliver out of a jam, but to hear them tell it, they had things covered. That definition must have changed recently, as it doesn't seem like "getting pelted with Vigilante bullets" qualifies as covered. Luckily Barry was there, but he also brings some bad news.

Invasion! kicked off towards the end of Supergirl, but things kick into high gear in this week's episode of The Flash. You can view the new clip above, and make sure to check out the episode's official synopsis below.

"IT'S HEROES VS. ALIENS IN THIS EPIC CROSSOVER EVENT — When aliens called the Dominators attack Central City, Barry (Grant Gustin) speeds over to Star City to ask the Green Arrow (guest star Stephen Amell) for help in stopping them. Realizing the battle against the Dominators is bigger than they thought, they track down the Legends of Tomorrow, and Barry and Cisco (Carlos Valdes) create a breach to bring back a secret weapon – Supergirl (guest star Melissa Benoist). Once all of the super friends are assembled, they come up with a plan to attack but a shocking secret related to Flashpoint is revealed and suddenly no one is sure who they can trust. Meanwhile, Wally (Keiynan Lonsdale) wants to join the battle against the aliens but Iris (Candice Patton) tells him he's not ready."

Dermott Downs directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Aaron Helbing & Todd Helbing.

NEXT: The Flash, Arrow, Supergirl, Legends of Tomorrow Crossover Trailer / Advance Review: The Supergirl, The Flash, Arrow, Legends of Tomorrow "Invasion!" Crossover Raises The Bar / Invasion! Crossover Promo Photos / Potential The Flash Spoiler Spotted On Set / The Flash Heroes V Aliens Behind The Teams Featurette Released

Supergirl airs Mondays at 8 p.m. ET/PT; The Flash on Tuesdays at the same time; Arrow on Wednesdays and DC's Legends of Tomorrow on Thursdays. All four series air on The CW. The "Invasion!" crossover will air beginning November 28.