The Time Travel of a Rock Star

Jack Armstrong is the most famous singer in the world, but in the midst of his popularity he has suddenly disappeared. Many speculate that he is dead, or that he may have escaped the world tour concert because he has a heart disease.
But unbeknownst to everyone he went to another universe.
An avid fan of Jack named Charlotte Bradley dreams of seeing Jack in person, so she earned to watch Jack's concert, and because she was poor, she was at the very top of the dome. And was too far away to see Jack up close. But she was contented because she saw him perform live, it was a dream come true for her because she finally watched his concert.
And one peculiar night, she met Jack unexpectedly and she is sent to another universe with him.