May 25 (7 p.m.) & May 27 (4 p.m.): Jenny Koppera directs teen actors in Ori Urian’s new children’s comedy about a group of teenagers on a field trip who decide to go off on their own, guided only by their cell phones. As they travel further into a desert, their cell phones stop working, so they must discover other ways to connect in order to find their way back to safety.  Riverside Arts Center, 76 N. Huron St., Ypsilanti. Tickets $10 (kids & seniors, $5) in advance at spinningdot.org & at the door. [email protected].