𝐂𝐇𝐀𝐏𝐓𝐄𝐑 𝐎𝐍𝐄

While Cristina in Zurich, she gets a call from Grey Sloan Memorial about Meredith. She brings an unexpected guest on her way to Seattle.

Btw this is if they brought Cristina's character back in season 17 and yes Meredith has COVID-19.