Under The Dome Season 1 All Episodes -exclusive May 2026

The town’s only doctor is seriously injured. A young medical student must perform an emergency amputation with limited supplies. Meanwhile, two new characters — a reverend and a journalist — arrive from outside the dome via a previously unnoticed small airlock-like opening. Their presence suggests the dome may be selectively permeable.

A mysterious “mini-dome” appears inside Chester’s Mill, containing four small objects that begin to move. The residents realize the dome is not just a barrier but possibly a test. The episode ends with a shocking death: one of the new arrivals is electrocuted by the mini-dome.

Big Jim’s dark past comes to light when his drug-dealing son, Junior, learns the truth about his mother’s death. The episode focuses on family betrayals and loyalty. Julia discovers that Barbie may have killed her husband — not out of malice, but in self-defense. The dome emits a strange, rhythmic sound for the first time. Under The Dome Season 1 All Episodes -EXCLUSIVE

Ratings were enormous for a summer series — the pilot drew over 13 million viewers, making it CBS’s most-watched summer drama debut in over a decade. The show was quickly renewed for a second season. Under the Dome Season 1 is available for streaming on Paramount+ (in the U.S.), Amazon Prime Video (with a CBS All Access add-on, now Paramount+), Apple TV (purchase), and DVD/Blu-ray. It has also aired on various international networks like Channel 5 (UK) and Global (Canada). Final Thoughts Season 1 of Under the Dome is a gripping, claustrophobic thriller that asks: if you couldn’t leave, and no one could help you — what would you become? While later seasons grew increasingly bizarre (including alien butterflies, cocoons, and time jumps), the first season remains a tight, compelling drama about ordinary people under extraordinary pressure.

A mysterious meningitis-like illness spreads through the town. The only antibiotics are held by a local pharmacist who refuses to give them up without payment. Barbie and Julia are forced to break in. The episode introduces the idea that the dome may be responding to the town’s actions — when a resident commits suicide, the dome briefly becomes transparent. The town’s only doctor is seriously injured

A teenager named Junior (Alexander Koch), who has been holding a girl named Angie (Britt Robertson) captive in his fallout shelter, becomes increasingly unstable. Meanwhile, a house fire threatens to spread due to the inability of outside firefighters to enter. Barbie and Julia work together to save a trapped child. The dome’s strange properties — including its ability to demagnetize metal and cause nosebleeds in some residents — are introduced.

A major turning point. The U.S. military attempts to destroy the dome with a powerful missile strike. The dome not only withstands the blast but sends a shockwave back, destroying an Air Force jet and several vehicles outside. The government declares the town a loss. Inside, Big Jim begins consolidating power, creating a “council” to enforce martial law. Their presence suggests the dome may be selectively

A mathematics teacher discovers that the dome’s circumference forms a perfect circle. More intriguingly, he finds that the dome’s properties seem to follow a pattern of “renewal” — every few days, the dome pulses with energy. Meanwhile, a group of residents attempts to escape via a miniature hot air balloon, but they are killed when the dome’s magnetic field fails at altitude.