"Cloud 9," a play by Caryl Churchill, is being directed by faculty member R.N. Sandberg and performed by seniors Victoria Gruenberg, Tyler Lawrence and Will Plunkett. The play, which will be staged at Princeton at 8 p.m. Dec. 11 and 13 and 2 p.m. Dec. 12 in the Matthews '53 Acting Studio, is one of the classic comedic satires of the British stage and features gender-bending characters and a time-warping exploration of political and sexual oppression.