On Wednesday’s (July 9) episode of “Late Show with David Letterman,” the funnyman took on fellow CBS show “Under the Dome,” explaining the series so far … check it out. We really can’t do it justice. It certainly does hit the main points of the show.

“Under the Dome’s” next new episode, “Force Majeure,” resources continue to dwindle, causing tensions to rise in Chester’s Mill, causing Big Jim to conduct a census to figure out just how long they have. Meanwhile, Dwight Yoakam guest-stars as Lyle, a man who butts heads with Rebecca Pine about the dome’s origin.

“Under the Dome” airs Mondays at 10 p.m. ET/PT on CBS.