WATCH: ‘Westworld’ Season 4 Teaser Trailer and Season 3 Recap

Westworld is coming back on HBO Max this summer, and to get fans of the dystopian sci-fi drama series pumped up about the upcoming season, the teaser trailer for season 4 dropped today (May 10).

West Side Story's Ariana DeBose is to join the robot apocalypse for the fourth season in an undisclosed role as a recurring guest star. Per The Hollywood Reporter, Debose will join returning actors Evan Rachel Wood, Thandiwe Newton, Ed Harris, Jeffrey Wright, Tessa Thompson, Luke Hemsworth, Aaron Paul and Angela Sarafyan.

Watch the teaser trailer for season 4 below:

The fourth season, out June 26, is simply described as “a dark odyssey about the fate of sentient life on earth.”

To recap the third season: it takes place three months after the events of the second season, with Dolores (Evan Rachel Wood) having escaped Westworld along with a few processing cores ("pearls"), including Bernard's (Jeffrey Wright). Taking residence in neo-Los Angeles in 2053, Dolores develops a relationship with Caleb (Aaron Paul) and comes to learn how artificial beings and lower-class humans are treated in the real world. Meanwhile, Maeve (Thandiwe Newton) finds herself in another part of the Delos park, one based on Fascist Italy during World War II. William (Ed Harris), who also left Westworld at the end of the second season, is now haunted by visions of his daughter, Emily, and Dolores.

Watch a recap of the third season below:

With Westworld's fourth season teaser trailer out, we thought we'd revisit the characters we love and love to hate from HBO's sci-fi series. In case you've never watched it, Westworld isn't your typical amusement park. Intended for rich vacationers, the futuristic park -- which is looked after by robotic "hosts" -- allows its visitors to live out their fantasies through artificial consciousness. No matter how illicit the fantasy may be, there are no consequences for the park's guests, allowing for any wish to be indulged. Eventually, the hosts get ou of the park into the "real" world, causing chaos. Westworld is based on the 1973 Michael Crichton movie of the same name and features an all-star cast including Evan Rachel Wood, Ed Harris, Jeffrey Wright, Thandiwe Newton, Tessa Thompson and Aaron Paul.