This sounds exciting and really unique, Matthew Burgess! :D Who's the protagonist? Michael or Christina?

Michael is a CIA agent, and Christina is a former of the MSS, currently a freelance assassin.

Cool, Matthew Burgess. What's MSS? An assassin group?

Ministry of State Security, China's CIA. They met when she was sent to assassinate the person holding Michael captive.

Ok, Matthew Burgess. I really like your logline. My only suggestion is to change "Michael and Christina" to "a __________ (adjective) CIA agent and his assassin fiancée." Characters names usually go in loglines for famous stories/stories that a lot of people know about.

"Following a betrayal at the hand of their wedding planner, a __________ (adjective) CIA agent and his assassin fiancée's wedding day turns into an all-out fight for survival."

Or do they get married before the wedding planner betrays them, Matthew Burgess? Like they say "I do," then the wedding planner betrays them, and they have to fight for their lives? If so, it'd be "Following a betrayal at the hand of their wedding planner, a __________ (adjective) CIA agent and his assassin wife's wedding day turns into an all-out fight for survival."

I agree, she betrays them prior to the wedding. It was written with character names because this was originally intended to be a follow-up to a previous short film titled A Kung Fu Anniversary. Thank you!

You're welcome, Matthew Burgess. Is your story like "Kung Fu Hustle"? If it is, when you pitch your script, you could say it's "Kung Fu Hustle" at a wedding.

Yes, it is. Another comparison I've heard is a cross between Mr. and Mrs. Smith and Kill Bill.

"Mr. and Mrs. Smith" meets "Kill Bill" is a perfect match/nutshell!