Topped by the Language App

"Mia is having a party, but Karl has to stay in bed."

Married couple Mia and Karl think their most adventurous days are behind them—until they start using the Morbo language app to learn some phrases before a summer trip to Europe. At first they're just competing to earn the most points, but the sinister app knows more about them than it should. It starts demanding they complete tasks to earn bonuses. Sexual acts that push their boundaries—and thrill them both. Before they know it, they are both being topped by the language app.

It's a hotwife and cuckold scenario with a difference, as the app recruits three buff men to please Mia, each other, and, finally, Karl!