When California introduced medical marijuana laws in 1996 it sparked a chain reaction that led to 18 other states passing similar laws. Two states, Washington and Colorado, even legalised marijuana for recreational use. With a full legalisation vote due in 2016, California is now considered by many as the key battleground state in the national marijuana debate. A debate that has divided Americans for over fifty years. From the concrete jungles of LA to the remote isolation of Northern California, "California High" takes you on a journey through the eyes of growers, cops, politicians and ordinary Californians to get up close and personal with the issues. It shows for the first time how truly complex the situation is.