Sure, we read the leaked, spoiler-filled plot description, but it didn’t much help us understand what, exactly, Inception, Christopher Nolan’s Leonardo DiCaprio–starring Dark Knight follow-up, is supposed to be about (DiCaprio plays a guy stealing ideas from people’s dreams or something). And neither does this new teaser trailer, in which an entire city is folded over on itself, unexplained changes in gravity’s direction wreak havoc on an unattended glass of water, and Leo pushes some poor chair beyond its manufacturer’s recommended reclining capabilities. This looks okay, we guess.