[14] In 1984, Plepler moved to New York City, where he opened a public relations firm and produced a series of interviews for The Atlantic magazine and a documentary on Israel and the Palestinian conflict.

[1] Plepler joined HBO in 1992 as an Executive Vice President,[1] at a time when the channel was known for showing movies and premium sporting events.

[18] During that time, HBO launched Emmy Award winning series including Game of Thrones, True Blood, Boardwalk Empire, Veep, Last Week Tonight with John Oliver, The Newsroom, and Big Little Lies.

[29] Black Bird, a six-part limited series, came to Apple TV+ on July 8, 2022, starring Taron Egerton, Paul Walter Hauser, Ray Liotta, Greg Kinnear and Sepadoh Moafi.

[30] Written by novelist Dennis Lehane and executive produced by Plepler, the series is based on the 2010 autobiographical novel In with the Devil: a Fallen Hero, a Serial, and a Dangerous Bargain for Redemption by James Keene and Hillel Levin.

[36] The documentary series was released on Apple TV+ in February 2022 and includes insights from a panel of educators, scholars and journalists, all of whom provided a nuanced look at the life of Abraham Lincoln.

[37] Award-winning actor Jeffrey Wright narrates with Bill Camp and Leslie Odom Jr. voicing Lincoln and Frederick Douglass, respectively.

"[38] In 2014 Plepler was named Media Person of the Year by Cannes Lions International Festival of Creativity[39] and in 2013 was inducted into Broadcasting and Cable Magazine's Hall of Fame.