Celebrity voices including Coldplay's Chris Martin and actors Emma Thompson and Will Poulter are among the narrators of a film for U.K. homelessness charity Crisis, which puts a sobering spin on the "12 Days of Christmas."

The PSA turns the first six days of the famous Christmas song into a description of what it's like to be homeless in the holidays, with lyrics such as "twelve sirens screaming," "ten sofas for surfing" and "eight doors slamming."  However there's a message of hope once we reach number six, as we then see how homeless people are getting some help during the holidays thanks to the charity, with books, classes, holiday food and "no one left lonely."

The film, whose other narrators are pop star Ellie Goulding, Olympian Dina Asher-Smith and TV presenter Nihal Arthanayake, is released as Crisis is in its 50th year of providing Christmas services for people experiencing homelessness at one of the toughest times of year.

It was created by Don't Panic London and directed by Charlie Watts at Rogue Films. 

"We wanted to highlight the worst forms of homelessness at one of the toughest times of the year – including people forced to sofa surf, sleep on night buses and even people on the very brink of becoming homeless," commented Rick Dodds, creative partner at Don't Panic, in a statement. "By flipping the script from Twelve Days to Twelve Nights we were able to focus the lyrics on the very toughest moments of being homeless, highlighting the support and services available from Crisis to help people on a path out of homelessness.”

“It was a really interesting script to develop and bring to life with the teams at Don't Panic and Crisis," added Watts. "It was a super collaborative process and from the offset we all agreed that this film needed to feel powerful and sincere."