A viral video featuring some very brave kids fighting cancer caught the attention of News 12, then Diddy and Ellen DeGeneres.

News 12 first met 4-year old Cassidy Kline, of Larchmont, earlier this month when she dreamed of dancing with artist Diddy. Thanks to "The Ellen DeGeneres Show," she got a chance to ride with him instead.

Kline is part of the group Fighting All the Monsters, which put together a viral video of them dancing to Diddy's hit "Bad Boys for Life." The group's mission is to garner support for families facing childhood cancer. Kline is in remission from stage 4 rhabdomyosarcoma.

Diddy shared News 12's story about Kline on his Instagram. A few days later, the group got a call from Ellen DeGeneres to fly out and dance. Some of the kids from the video appeared on Ellen's show Thursday alongside Diddy, who appeared as a surprise guest.

Kline hadn't been feeling well and was released from the hospital just in time Tuesday time to catch her flight to California. She didn't have the energy to dance on stage with the other kids, but Diddy didn't want her to feel left out. He met Kline backstage, where he took photos and made her feel special.

Shutterfly also donated $25,000 to the organization.

Kline is feeling much better these days and keeps asking her mom when Diddy is going to come over to play.
Diddy says he was touched that his song is helping inspire the kids to keep fighting.