Short Introductory Game

TL;DR; can I run Mothership in under an hour?

After I told a relative of mine about me GMing a game of Mothership for the first time, they became very interested and want me to run it at a get-together for their friend group (we are both adults, but their friend group enjoys some lighter games like Mahjong or Trivial Pursuit, so it's not that out of character.) They said they don't want to spend their whole evening doing that, and asked if I could do it in less than an hour (that's more of a hard and fast rule, if it takes 90 minutes, I think they'll be fine with it.) I told them I would "think about it", because I didn't want to say "no" outright. But now I'm thinking, maybe it can be done? I would love to bring more people into the hobby.

So, experienced wardens, can it be done? Can a 3-act story be played through in so little time? If so, do you have any tips? I've played in a few games, but as a GM I'm very green.