Release Message:  Sarah and David Kirsten are tourists from the 21st century who take a forbidden holiday in 1938 Mexico. From an original story by Ray Bradbury

Description:  Sarah and David Kirsten are tourists from the 21st century who take a forbidden holiday in 1938 Mexico. But enforcers from the future, trying to keep the time-stream free from pollution and paradox, are on their trail. Can they evade their pursuers without betraying their origins?