Ash was a - mostly - normal adult who'd spent the last year of her life looking for a job. 

Then, she unexpectedly experiences what was happening to someone else.

It's like this; she gets slapped, the other person feels it. The other person goes to sleep, she can see their dreams in the back of her head.

Who is linked to her and how does she find them? 

Just after everything seems all good and well, she and her link discover something huge.