The whole album "Grand Unification" is a concept album.
Here's some quotes from Charlie, which are in issue #1097 of kerrang;
"There's a concept behind the album: It starts just as the world self destructs because of it's problems. Then the old world crumbles apart & resurfaces as a new generation wakes up in a land free of bullshit"
[About Sleep Well Tonight] "Interms of the concept, this is the moment where the world changes & there's no going back"
The whole album "Grand Unification" is a concept album.
Here's some quotes from Charlie, which are in issue #1097 of kerrang;
"There's a concept behind the album: It starts just as the world self destructs because of it's problems. Then the old world crumbles apart & resurfaces as a new generation wakes up in a land free of bullshit"
[About Sleep Well Tonight] "Interms of the concept, this is the moment where the world changes & there's no going back"