Well, I don’t know how much detail you want, but basically, as I said, the show is about five international astronauts on a three year mission to Mars, with of course some extra focus on the family back on Earth of the lead of the show, the American. Who is Hilary Swank, I mean, she is the big name here.
But anyway, Lu is the Chinese astronaut and is married (to a man) and has a kid. There’s a lot of cooperation between the different space agencies so this particular team’s communications liaison at the NASA command center is a Chinese woman named Mei. In flashbacks, we see how Lu and Mei met and bonded and fell in love and how they didn’t act on it because Lu couldn’t do that to her husband, or son or country, being the whole face of China on this historic mission and all. In the present, after the mission’s started, they’re found out anyway and Mei is transferred to a different position away from the team. Lu is frantic to reach her to make sure she’s okay and finally is able to talk to her for a bit and their arc ends on a hopeful note but for now that’s the last we see of Mei.
They only really get the one episode (ep 3) but it’s so romantic, they center the other person and care about them and what matters to them in such a respectful, loving way. Like, I can be pretty judgy on endings, right, and I didn’t love that Mei was sent away so quickly, but what we got of them, they got me. The actresses really sold the emotion of it, the way they both openly accept they’re in love and how there’s that awareness in all their interactions. I just liked it. 🙂