Iron Man is moving on!

Robert Downey Jr. and his wife, Susan Downey, are diving into the exciting story of a young boy who is half-deer and half-human.

"We heard that there was this great graphic novel series and they just had this incredible emotional breadth of the storytelling," Downey Jr. said.

Sweet Tooth follows this special boy, Gus (Christian Convery), as he teams up with Tommy Jepperd (Nonso Anozie), which evolves into a friendship centered around hope. The pair set off on an exciting adventure that is action-packed and emotional.

"Together, they team up and set out on an adventure about family, friendship, hope and love," Convery said.

"When you work together, anything is possible, and hope is always there no matter how dark it gets," Anozie said.

Sweet Tooth is streaming now on Netflix.