The Winchesters, the prequel series debuting on The CW this fall, premiered a new minute-long promo ahead of its Oct. 11 launch, and only ET has the exclusive first look at the upcoming drama, which shifts the focus to Sam and Dean Winchester's parents.Narrated by and told through the perspective of Dean (Jensen Ackles), tells the untold love story of how John (Drake Rodger) met Mary (Meg Donnelly) and how they put it all on the line to not only save their love, but the entire world. In the new promo, Ackles makes his return to the universe as Dean, looking longingly into the distance as he's advised to «let the past go.» Of course, that's easier said than done as the action ramps up for young John and Mary, who find themselves at the center of intense battles and hunting down evil.