The dome is coming down, and so is "Under the Dome": CBS has cancelled the sci-fi drama after three seasons.

The network announced the cancellation on Monday, revealing that the show would end with the season three finale on September 10. While the series, based on the popular Stephen King novel of the same name, initially premiered to blockbuster ratings back in 2013, it just couldn't keep up that momentum.

"Two years ago, 'Under the Dome' broke new ground in the summer and became an instant hit on CBS, as well as with viewers around the world," said Nina Tassler, chair of CBS Entertainment, in a statement. "'Dome''s event storytelling and multiplatform business model paved the way for more original summer programming with the successful rollouts of 'Extant' and 'Zoo.' We're excited to present the final chapter in Chester's Mill as the story comes full circle, with the dome coming down as dramatically as it went up."

"Dome" was originally envisioned as a one-season adaptation of King's novel, but was so popular that CBS brass decided to amend the storyline, add new characters, and continue the series indefinitely. But all good things must come to an end, and with "Dome"'s declining ratings -- and the showrunners' decision to take down the titular mysterious obstacle -- it seemed like the time for the show to end had finally arrived.

According to Variety, the series finale "will answer many questions about the dome's origin and power, as two groups of residents will engage in one final conflict that some won't survive."

"Under the Dome" wraps its run on CBS on September 10.

[via: Variety]