After confronting a young British woman about a dog that mysteriously appears at several crime scenes, the Winchesters gain an ally in their war against what comes knocking in the dark of the night. Except this ally may or may not be one of the very things they're determined to kill.

"Perhaps we were someone else, once upon a time. Perhaps we even hold their memories in our heads. Maybe it means something that we've found one another now for some strange unknown reason, but it doesn't mean we are them."

Six months after finding one another, Natsu and Lucy are met with a quest from Mavis: find an unknown object on Tenrou Island before the humans who found it do. Neither know what they're looking for, and the quest leaves them wondering if the era of mythics remaining lost to legend is ending - and if the true identities of END and the Lost Star will be revealed once again.

"'You long-living creatures worry far too much about things like that,' Levy tells Gajeel, smiling when Natsu complains loudly about the tears spilling over Lucy's cheeks. 'Maybe what you said is right. Maybe they'll be back where they started. But that's not now. We need to live in the here and now – enjoy the now, while we're alive to enjoy it.'"

Tagging along in the TARDIS after being rescued from a situation she was sold into, Jayden O'Connors finds that there's much more to life than expected. When the Doctor's involved, it's full of adventure, other worlds, saving lives, and quite a bit of running. But the clock is ticking, and even a Time Lord from Gallifrey can't help her run forever.