Those who did not learn from the schlock pop culture of 1970s and ’80s are doomed to repeat it. Hot on the heels of TNT’s “Dallas” 2.0 and ABC’s “Megastunts” revival of Evel Knievel-style thrill-seeking comes “Blue Lagoon: The Awakening” (7 p.m., Lifetime). If that weren’t disturbing enough, Christopher Atkins, who starred in the original “Blue Lagoon,” and Denise Richards (“Starship Troopers”) are cast as authority figures.

Two newcomers portray the star-crossed teens Emma (Indiana Evans) and Dean (Brenton Thwaites). They’re marooned on a desert island during a class trip to Trinidad. She’s a straight-A, class leader-type and he’s a slacker with some emotional baggage. But as the days turn to months in tropical splendor, the teens’ differences disappear as they divest themselves of their old hang-ups (and much of their wardrobe).

The original “Lagoon” starred a teenage Brooke Shields, who was appearing in suggestive commercials for designer jeans at the time. So the whole insipid undertaking was bathed in a certain soft-focused sleaze packaged as a tale of innocents let loose in paradise.

Knee-deep in the 21st century, it would seem quaint or even ludicrous for Lifetime to portray these teens as virginal. The real question is whether they will maintain the simple, honest relationship they shared in the wild or resort to their phony high school roles. More importantly, how long will it take them to get back on Facebook?

l Worried that he’s become a part-time husband and father at best, a soldier (Dean Cain) joins forces with his wife (Kristy Swanson) to open a bakery in the 2012 Father’s Day fantasy “Operation Cupcake” (7 p.m., Hallmark). Empty calories.

Saturday’s other highlights

• Continuing coverage of the 2012 U.S. Open Golf Championship (3 p.m., NBC).

• Major League Baseball (6 p.m., Fox).

• The voices of Paul Newman and Owen Wilson headline the 2006 Pixar fantasy “Cars” (7 p.m., ABC).

• A suburban mother (Sandra Bullock) takes in an underprivileged youth and helps him succeed in football and in life in the 2009 feel-good drama “The Blind Side” (7 p.m., ABC Family).

• Rival illusionists (Christian Bale and Hugh Jackman) take their feud to deadly extremes in the 2006 historical drama “The Prestige” (7 p.m., IFC).