Doctor Who icons David Tennant, Tom Baker, Colin Baker, Sylvester McCoy, Christopher Eccleston, Peter Davison and Paul McGann are uniting for a new audio drama series.
Commemorating the cult sci-fi franchise's 60th anniversary in 2023, the stars will feature in Big Finish's eight-part adventure Doctor Who: Once and Future, which rolls out across seven months starting in May.
"An astonishing array of talent has come aboard to be a part of this epic eight-hour anniversary story. It's a huge Doctor Who party and a massive celebration that has been years in the making," teased producer David Richardson.
Related: Doctor Who boss explains why Tom Baker was missing from 'Power of the Doctor'
As for what fans can expect, here's a Once and Future synopsis: "The Time War. The Doctor has been injured and brought to a Time Lord field hospital. His body glows with energy, but this is no regeneration into a future form – instead, the Doctor's past faces begin to appear as he flits haphazardly between incarnations...
"Staggering to his TARDIS, the Doctor sets out to solve the mystery of his 'degeneration'. Who has done this to him? How? And why? From the Earth to the stars, across an array of familiar times and places, he follows clues to retrace his steps, encountering old friends and enemies along the way.
"Tumbling through his lives, the Doctor must stop his degeneration before he loses himself completely..."
Related: Doctor Who's Russell T Davies discusses Ncuti Gatwa's 'thunderbolt audition'
Eccleston, who kicked off the whole Doctor Who revival in 2005, previously alluded to a "very special" project in the summer.
"I've recorded something very special for the 60th anniversary. And for me it was all about working with this incredible actor and incredible human being called David Warner," said the actor.
"David Warner is extraordinary. And if any actor should have been the Doctor, it would have been David."
Warner sadly passed away not long after, aged 80.
Doctor Who returns in 2023 on BBC One in the UK and Disney+ elsewhere. Meanwhile, in the US, the show airs on BBC America, with series 1-12 available on HBO Max. Classic Doctor Who streams on BritBox in the UK.