The roller coaster is the allegory of life for Filomeno Perez Diaz who has given it maintenance for over 40 years and also for Sebastian Lara Rosas, a 15 years old boy that plans start giving maintenance after finishing school. It is the birth of a new generation confronted with the death of the one that came about their tradition, memory and future are reunited to ride one more time La Montana Rusa. The title suggests what our subjects can't put in a conscious state of mind. 'I never ever didn't let go...' falls into a triple negation confirming the opposite for them.