Sense of Security

No matter what it is, a hero or a container, it's all about a sense of security. We always try to find something to protect us from unpredictable attack and danger. But when there is no hero, we have to be our own heroes. Strengthened our bodies, uploaded our memories, we did all we could. But when the biggest container--the earth-- break down, where are we going? Traveling through all the periods of time and losing shapes of our bodies, with the simplest form, who are we?