WATCH: Cher releases emotional trailer for her upcoming documentary 'Cher & The Loneliest Elephant'

Get your tissues ready ...

Because Cher has just released the trailer for her upcoming documentary Cher & The Loneliest Elephant - and it is extremely emotional.

In the trailer, the iconic singer shares the story of Kaavan and what moved her to help fight for his release.

The clip starts with the 'Believe' singer in Islamabad, Pakistan, explaining the long trek on foot necessary to reach the zoo where the elephant was kept.

"I could see him from the distance," the Grammy winner begins before the footage cuts to the giant mammal, who had a thick chain wrapped around one ankle. "He was shackled. He was suffering."

She continues: "Elephants are just like we are: They are so family-oriented and emotional. And so, I wanted to free him."

The trailer goes on with various experts explaining the plight of Kaavan, who had been held in captivity for 35 years - with a decade spent alone - in awful conditions.

Cher & The Loneliest Elephant is set for release on May 19.