In a run-of-the-mill Chinese bio lab, where run-of-the-mill research is conducted, someone’s got the bug—the love bug. Shy lab worker, Wang, is secretly smitten with his fellow female co-worker, Han. Unsure how to woo Han, Wang’s love remains safely quarantined within himself. But when an infectious and charming foreign body seeks to invade Han and destroy Wang’s world, Wang must let his love leak out.