CBS has announced that Under the Dome’s season 3 finale will be the final episode of the book-to-TV series.

Under the Dome has suffered from sinking ratings over the past couple of years, so the network has decided to pull the plug. Luckily, fans of the show will get plenty of closure come September 10.

“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 CBS Entertainment chairman Nina Tassler in a statement. “Dome’s event storytelling and multi-platform 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.”

CBS used the announcement to share a few new details about the finale today. The finale’s synopsis reads: “In the series finale, when the Dome comes down, many questions about its origin and power will be answered, as two groups of residents engage in one final conflict that some won’t survive.”

Check out a just-released trailer for the series finale below:

Are you sad to see ‘Under the Dome’ go?

Under the Dome is based on the Stephen King novel of the same name. Unlike the TV series, King’s book is a single story — not a series.