NBC's upcoming drama series gives getting lost in thought a whole new meaning.

The network released the trailer for "Reverie" Thursday, and the preview introduces hostage negotiator Mara Kint (Sarah Shahi), a woman who has to save people from technology and themselves. In the trailer, she learns of Reverie, a virtual reality program that allows users to visit the moments and memories they most treasure as if they're in a waking dream. The problem is that many of the people don't want to leave, so their minds get stuck there while their bodies waste away.

Mara's former boss (Dennis Haysbert) convinces her to help get them out, but that sets her up to face unexpected dangers. As we learn in the trailer, the program is designed for one person and they have "no idea what's going to happen" with a second person inside.

Watch the trailer below.

"Reverie" premieres May 30 at 10 p.m. ET/PT on NBC.