I've had an idea for a fanfic floating around in my head for a while - tell me what you think?

Busara is an alien, she owns an intergalactic bar accessible only by teleport. After miracle day, Captain Jack Harkness, who she has known for many years, becomes a regular, drowning his grief in drink. Fed up with his moping around, Busara goes on a mission to rescue Torchwood Four from the past and reunite them. Captain Jack Harkness can become a good man again.