In support of National Cancer Survivors Day, Disney Junior's "Doc McStuffins" will air a special episode with a guest appearance from "Good Morning America" co-anchor Robin Roberts.

Throughout the years, 'Doc McStuffins' have covered serious topics in a way for parents to have those conversations with their children. The premise of this special episode is a 4-year-old chemotherapy patient named Audrey who confronts the issue of hair loss with her doll Hannah.

"Since 'Doc McStuffins' premiered, we've been contacted by numerous families of children who have been dealing with very serious illnesses. With this episode, we set out to tell a story for those kids whose illnesses can't be cured by just a kiss and a cuddle. It was important to me to let them know that we see them and they matter," creator and executive producer Chris Nee said in a press release. "Having Robin Roberts portray Audrey's mom in the episode is so special because she has experienced what many of these kids are going through and she's exactly who you would want cheerleading them through the tough times in their lives."

Advance screenings of the episode will air at more than 40 children's hospitals across the country. The episode officially airs Sunday, June 4, at 8 a.m. ET on Disney Channel. 

Check out the preview below.