This collection essentially represents the contents of THOR BY JASON AARON OMNIBUS VOL. 2 (except for UNWORTHY THOR #1-5 and WAR OF THE REALMS #1-6). 
See full contents below:

THOR BY JASON AARON & RUSSELL DAUTERMAN VOL. 3 Hardcover

Death comes for the Mighty Thor! But first, she must survive the Asgard/Shi'ar War! Plus, as Malekith's manipulations threaten all there is, Jane Foster recruits Angela and Sif to her new League of Realms - and leads them on a deadly mission into Dark Elf territory! Then, when the hammer of the Ultimate Thor resurfaces, its new wielder becomes a thundering Thor for dangerous times. But who is this new War Thor? As Malekith's dark army grows, the Queen of Cinders threatens to engulf the Realms. But worse is still yet to come! When the Mangog returns just as Jane's cancer takes a turn for the worse, the end approaches. Will the Gates of Valhalla open for Jane? Collecting MIGHTY THOR (2015) #13-23 and #700-706, GENERATIONS: THE UNWORTHY THOR & THE MIGHTY THOR and MIGHTY THOR: AT THE GATES OF VALHALLA.

Thor by Jason Aaron Vol. 4 Hardcover

Thor Odinson has regained his mantle - but Mjolnir is no more! And with a War of the Realms looming on the horizon, he'll need some new hammers - lots of them! But will any amount of weapons be enough against the unstoppable Juggernaut? In the present, Thor joins the Valkyries in the fight to save Hel from the Queen of Cinders! In the far future, King Thor encounters an old friend who's undergone some startling changes! And in the distant past, the young Odinson still can't figure out how to prove himself worthy of Mjolnir - but Loki thinks he knows how to keep his brother away from Midgard for good! Plus, Thor is reunited with his sister Angela when Heven attacks! And Roz Solomon, Odin and Freyja gird themselves for war as Jason Aaron's legendary run continues!

Collecting THOR (2018) #1-11.

THOR BY JASON AARON VOL. 5 Hardcover

As Jason Aaron’s staggering saga draws to a close, the effects of Malekith’s raging War of the Realms are felt far and wide! Loki spends some quality time with his dear old dad, Laufey — and, sent on a vital mission, will Cul the Serpent redeem himself at last? Centuries ago, a moment of destiny arrives for young Thor — for the War of the Realms even reaches into the past! But when the epic war comes to its inevitable conclusion, what is left for the God of Thunder in the here and now? And in the far future, King Thor must once again reckon with All-Black the Necrosword — now in the hands of his murderous brother, Loki! It’s time for one last, cataclysmic showdown as the end of all things draws near! Collecting THOR (2018) #12-16 and KING THOR #1-4.