Once upon a time (two years ago), there were four siblings, all artists. One wanted to host a family reunion, another wanted to make a horror film, and a third was down for whatever so long so he’d get to compose the R&B soundtrack. The result is Sister, a “film conceived as dance” featuring dancers Sarah, Isabel, and Ligia Manuela Lewis, with live music from their brother, George Lewis Jr. of Twin Shadow.

Although the film flouts most modern dance conventions, there is enough dancerly marginalia interspersed in the mayhem to sustain interest, like when a sister wakes from napping, dazedly fluffs her hair, lifts each leg aloft in a pretty bent suspension with an ease only a dancer can muster, and holds it there to impassively put on her socks and boots. Bless those moments and their quiet power.

1/13 and 1/14, 6:30 and 9 PM Chicago Cultural Center 78 W. Washington onedge-lewisforever.eventbrite.com free