Season 1 | Episode 1 While patrolling Federation space, the U.S.S. Shenzhou encounters an object of unknown origin, putting First Officer Michael Burnham to her greatest test yet.
Season 2 | Episode 1 After answering a distress signal from the U.S.S. Enterprise, the U.S.S. Discovery welcomes aboard Captain Christopher Pike and begins a new mission to investigate the meaning behind seven mysterious red signals. Michael Burnham grapples with her past growing up on Vulcan with her foster parents and brother Spock.
Season 1 | Episode 2 Face to face with Klingon vessels, the U.S.S. Shenzhou prepares for the possibility of war if negotiations fail. Amidst the turmoil, Burnham looks back to her Vulcan upbringing for guidance.
Season 2 | Episode 2 A new signal appears, prompting Stamets' emotional return to the mycelial network and leading Burnham, Pike and Owosekun to a pre-warp planet, where they face a complex ethical dilemma. Tilly's overeagerness lands her in trouble but when the planet - and Discovery's landing party - are threatened, her curiosity may be the one thing that can save them.
Season 1 | Episode 3 Burnham finds herself aboard the U.S.S. Discovery where she quickly realizes things are not as they seem, including the mysterious Captain Gabriel Lorca.
Season 2 | Episode 3 A surprise visitor to the U.S.S. Discovery brings shocking news about Spock and dredges up past regrets for Burnham. Following the asteroid incident, Tilly struggles to keep a grip on her reality. L'Rell's authority on Qo'noS is threatened.
Season 2 | Episode 4 A mysterious sphere threatens the U.S.S. Discovery even as May, in her original form, implements a plan that puts Tilly's life in danger. Saru and Burnham's bond grows when Saru is forced to acknowledge a deeply unsettling Kelpien truth. Pike receives new intel on Spock from a loyal friend.
Season 1 | Episode 4 With tensions and stakes high as Starfleet continues in their efforts to end the war with Klingons, Burnham begins to settle in to her new position aboard the U.S.S. Discovery.
Season 2 | Episode 5 Burnham and the crew navigate a dangerous alien landscape in a race against time to save Tilly's life, but Stamets is not at all prepared for what they find in the process. Section 31 is assigned to help track down Spock, much to Pike's dismay.
Season 1 | Episode 5 Lorca unexpectedly finds himself in the company of a prisoner of war, Starfleet Lieutenant Ash Tyler, and a notorious intergalactic criminal, Harry Mudd. Meanwhile, Burnham voices her concerns about the repercussions of the spore drive jumps on “Ripper.”
Season 2 | Episode 6 When a new signal appears over Saru's home planet, Burnham, Saru and the crew embark on a perilous mission that puts Saru in danger and raises questions about the Red Angel's intentions. Hugh struggles to come to terms with his new reality.
Season 1 | Episode 6 The U.S.S. Discovery crew is intrigued by new addition, Lt. Ash Tyler. Sarek seeks Burnham's help, rekindling memories from her past. Admiral Cornwell questions Lorca's tactics.
Season 2 | Episode 7 Burnham goes to Vulcan in search of Spock, where she unearths surprising family secrets. In researching what is left of the Red Angel's signal over Kaminar, Pike and Tyler end up in battle with time itself. Georgiou has a few tricks up her sleeve for Leland and Section 31.
Season 1 | Episode 7 As the U.S.S. Discovery crew attempts to let loose at a party, an unwelcome visitor comes aboard bringing about a problematic and twisted sequence of events.
Season 2 | Episode 8 Spock and Burnham head to Talos IV, where the process of healing Spock forces the siblings to confront their troubled past. Stamets desperately tries to reconnect with Hugh, while Tyler struggles to shed the crew's suspicions of him due to his past as Voq.
Season 1 | Episode 8 The U.S.S. Discovery is tasked with a high priority mission to planet Pahvo and learn the science behind the Klingon's cloaking technology.
Season 1 | Episode 9 Bypassing Starfleet's orders, Lorca uses the U.S.S. Discovery crew's ultimate asset, the ship itself, in an effort to end the war with the Klingons once and for all.
Season 2 | Episode 9 When the Discovery crew infiltrates Section 31's headquarters, suspicions arise that the crew may have a traitor in their midst. Burnham tries to help Spock but her efforts don't go as planned.
Season 1 | Episode 10 While in unfamiliar territory, the U.S.S. Discovery crew is forced to get creative in their next efforts to survive opposing and unprecedented forces and return home.
Season 2 | Episode 10 Burnham is stunned when she learns her ties to Section 31 run deeper than she ever fathomed. Armed with the identity of the Red Angel, the U.S.S. Discovery goes to work on its most critical mission to date.
Season 1 | Episode 11 The crew continues their guise, and Burnham is ordered on a merciless mission to end the resistance in hopes of returning home. Meanwhile, Tilly works on restoring Stamets’ neurofunction.
Season 2 | Episode 11 Burnham receives the reunion she's been longing for, but it doesn't go quite as she imagined. Georgiou and Tyler sense a disturbing change in Leland.
Season 1 | Episode 12 Burnham heads to the ISS Charon with a special "gift" for the Emperor. With the help of an unexpected source, Stamets gains clarity while trapped inside the mycelial network. Saru asks for L'Rell's help.
Season 2 | Episode 12 A fourth signal leads the U.S.S. Discovery to a world where Pike is forced to make a life-changing choice. Burnham and Spock investigate a Section 31 ship gone rogue, leading to a discovery with catastrophic consequences.
Season 1 | Episode 13 Lorca plans to move forward with a coup against the Emperor, propelling Burnham to make a quick decision to save not only herself, but the U.S.S. Discovery.
Season 1 | Episode 1
Season 1 | Episode 2 A journalist listens to a podcast detailing how the plane on which he's a passenger will disappear.
Season 1 | Episode 3 A self-made lawyer and mother named Nina Harrison takes her son Dorian to his first year at college. Her old camcorder can rewind time, but can it help her ensure her son's future?
Season 1 | Episode 4 On Christmas Eve in Iglaak, Alaska, a mysterious traveler wishes to be pardoned by Captain Lane Pendleton.
Season 1 | Episode 5
Season 1 | Episode 6
Season 1 | Episode 7 A meteor shower spreads infection across an entire town, affecting some of the inhabitants more than others.
Season 1 | Episode 8 A suburban housewife (Ginnifer Goodwin) wants to go home. But where - and what - is home, really? Zabryna Guevara and James Frain guest star.
Season 1 | Episode 9 Following the death of his dad, an anthropology professor finds the re-emergence of a gun called the Blue Scorpion which is about to become his most personal research project.
Season 1 | Episode 10