Naomi Watts to portray ballet legend Margot Fonteyn

According to Deadline, the official synopsis for Margot + Rudi reads: "She is 42, the greatest ballerina in the West, and sensing her career is over; he is 23, a rebellious Soviet defector—magnetic, explosive, unstoppable. Together, they ignite the stage and become icons of the Swinging Sixties. 

"Margot is reborn by Rudi's wild energy, but their bond is complicated by her marriage and his affair with another dancer. To preserve what they have, they will risk everything for one defining ballet—because the only place they can truly be together … is on stage." 

The movie will also star Harriet Walter, Richard E. Grant, and Demian Bichir.

Margot + Rudi is set to shoot in October.