"Star Trek Beyond" director Justin Lin dropped a set photo from the Vancouver set -- in honor of First Contact Day (the holiday in which humans met vulcans, as chronicled in "Star Trek: First Contact") -- posing next to a pair of unidentified alien characters from the film.

Along with the photo is a link that leads to a blog post from Lin, where he challenges fans to guess the actors in the photo, for the chance to win an official crew t-shirt and "Star Trek Beyond" poster.

"Star Trek Beyond" hits theaters on July 22, 2016.