Men in Black 5 brings Will Smith’s Agent J back into action alongside Chris Hemsworth’s Agent H, continuing the blend of humor, action, and extraterrestrial drama that the franchise is known for. The story picks up years after the events of MIB: International, with the Men in Black agency having expanded their operations into new territories of space, establishing connections with alien species on distant planets.

The teaser opens with Agent J (Will Smith) feeling out of place in a world that’s rapidly changing. He’s retired from active duty and living a quiet life, but when a mysterious message arrives through the MIB network, warning of an incoming alien invasion that could threaten the very existence of Earth, he’s reluctantly pulled back into the fold. Agent H (Chris Hemsworth), who has been working on high-profile cases in London, is sent to recruit J for one last mission.

The main villain is introduced as Nephra, a powerful and ancient alien entity capable of manipulating time. Nephra’s plan is to undo key events in human history, creating alternate timelines where humans never defeat alien threats, allowing her species to invade Earth with ease. Her first move? Reversing the moment the Men in Black agency was created, erasing its existence from history.

Agent J and Agent H are tasked with stopping Nephra’s plan, but this time, it’s not just about futuristic tech and alien weaponry—they must venture into different timelines to restore the fabric of reality. The plot involves travel back to iconic moments from the previous MIB films, including a return to the 1960s to encounter a young version of Agent K (played by a de-aged Tommy Lee Jones). Along the way, they meet familiar faces like Frank the Pug and the Worms, providing some nostalgic humor.

In the climactic battle, Nephra uses her time-manipulating abilities to challenge the agents in a surreal showdown where they fight across different time periods—dodging prehistoric creatures, battling through futuristic cities, and even interacting with alternate versions of themselves. The film ends with J and H managing to restore the timeline, but a post-credits scene teases the existence of even greater threats lurking in the multiverse.