[Sweet Daddy Hate]

What is Lando's role in this mess?

Spoiler!

Leia sends the Resistance mod squad to find an "old contact" who might be able to help them find their way to the unknown regions lair of Sidious. This contact has more experience with the unknown regions than any other person Leia knows. The group go to the planet we see with what looks like a state fair going on and try to blend in. Chewbacca of course stands out like sore thumb and the contact recognizes him immediately and reveals himself to the group. This is Lando.
Lando was married and had a child that was stolen from him by the first order. This child managed to escape and has been hiding on Endor. This is one of the new characters that will be introduced in the film. Pretty convenient, huh? So, happy endings for Lando and his baby girl.