The true life misadventures of a couple who try to save their failing marriage and reignite their dull sex life and relationship by daringly moonlighting as an ?escort duo? and experiencing the fantasies of others.

We LOVE this one dpg - THANK YOU!!!!!

How about something like:

The true life misadventures of a couple who, while trying save their failing marriage, accidentally rediscover the joy of sex in their relationship when they become an 'escort duo' fulfilling the sex fantasies of others. (35 words)

[Notes:
"True life" -- this really happened, folks. Part of the sizzle that sells the steak.

"Misadventures" rather than adventures to suggest the comedy in the premise. More sizzle.

This version attempts to put the spotlight as much on your relationship as the adventures because, for the long haul, it's the relationship chemistry -- more sizzle- between you two that has to carry the story, whether feature film or series.]

fwiw

Again GREAT advice! I edited the above just to share ONE anecdote...