Single-Player Mission

At times you decide to go on a mission:
A journey to retrieve and put together the pieces of a puzzle.
Turns out the pieces of this puzzle are not found along the way...,
Actually, some of them are - most of them are not
At times, some people come closer meaning to join your quest for the long-lost pieces,
meaning to share your mission directives.
But what it happens is that they are YOUR mission, NOT theirs, and at a certain point, you notice you are by yourself once again... You notice you have always been on your own.
At times, going on a single-player mission means you'll find no one to back you up...
The mission is not over, never was and will never be unless I tell it is.
(by HAM)