Mark Ruffalo is set to star opposite Ruth Madeley in the Apple Original Films’ Being Heumann. The film is an adaptation of Judy Heumann’s bestselling memoir.

Being Heumann follows Heumann as she leads over a hundred disabled people to take over the San Francisco Federal Building, kicking off a 28-day sit-in in 1977. The protestors quickly form a tightly bound community, refusing to leave until the government enforces section 504 of the Rehabilitation Act, which required all federal spaces to become accessible. Ruffalo will play Joseph Califano.

Siân Heder (CODA) is directing from a script by Heder and Rebekah Taussig.

David Permut (Hacksaw Ridge, Face/Off) will produce alongside Kevin Walsh (Napoleon, Manchester by the Sea), whose The Walsh Company is under an overall deal with Apple. Heumann’s managers John W. Beach and Kevin Cleary of Gravity Squared Entertainment will also serve as producers, with Heumann, Being Heumann co-author Kristen Joiner, and Diana Pokorny exec producing.