Shortly before the Cataclysm, Thrall journeyed to Garadar to discover why the elements of Azeroth were so afraid. When he arrived, Greatmother Geyah (Thrall’s Grandmother) advised him to turn to the Mag’har Aggra, who told him bluntly that he had been both leader and shaman for far too long and that he would have to give up his leadership role to truly become a shaman. Despite their rough beginnings, Thrall and Aggra grew closer to one another as he became truly connected with the spirits and became a proper shaman. Before returning to Azeroth Thrall and Aggra became romantic after she fell for his big heart.
During the third phase of the Elemental Unrest world event, she could be found talking with Thrall and Gavan Grayfeather at the Throne of the Elements.
Thrall says: Would I be here if this were not serious?
Aggra says: I have heard you before. You are here to save your world; to learn from ours. Greatmother Geyah has charged me with instructing you, and as such, you will listen to me, Go’el.
Thrall says: I have told you to call me Thrall.
Aggra says: Yes I know, Go’el. Thrall is the leader of the Horde, but you are not here in that capacity. Look at you: At what you are wearing…
(referring to his Doomhammer’s Plate.)
Aggra says: You say you have come to seek knowledge and understanding, but you are dressed for battle. That is why I question you and your willingness to do what must be done.
Thrall says: My clothing?! Is that what this has come to now? We debate the merits of my clothing?
Gavan Grayfeather says: The clothing is merely a manifestation of a larger problem. I’ve no doubt that you are here to learn, but you must commit yourself both in spirit and in form.
Aggra says: The dwarf speaks the truth. If you wish to commune with the elements you must do so from the heart.
Aggra says: Your heart, your love for your land and your people is what has led you here. It was neither your armor nor your weapons.
Gavan Grayfeather says: Thrall, you must fully devote yourself to the cause.
Aggra shoots Gavan a disapproving look.
Aggra says: Go’el. You cannot continue to ride the line between Warchief and Shaman. The time will come when you must commit to one side fully. That time is fast approaching.
Thrall says: I hear what both of you are saying and am grateful for the counsel.
Thrall says: If I am to understand all that is transpiring, if I am to make a difference, then my devotion must be absolute. I must submit.
When Thrall and Aggra returned to Azeroth, they participated in the funeral of Cairne Bloodhoof. The next day, she noticed that Thrall no longer wore the armour of Doomhammer which satisfied her. Both left Thunder Bluff and Mulgore and went to the goblin port town Ratchet, where Gazlowe welcomed them and prepared a ship to the Maelstrom. The ship was called Draka’s Fury in honour of all Orcish women. Aggra was emotional and together with Thrall and a crew boarded the ship and left Kalimdor to the Maelstrom, which was destroyed near the Lost Isles by the Alliance (see video). When the ship sank, they lost their “precious cargo” i.e Thrall. She later appeared at the Maelstrom (affiliated with the Earthen Ring) and sends adventurers into Deepholm.
After the Guardians of Hyjal and adventurers thwart the invasion of Hyjal by the Twilight’s Hammer, a meeting was convened at the ancient Word Tree of Nordrassil. Thrall and Aggra were among the gathered heroes at the meeting that ended in tragedy when a incredibly powerful agent of the Twilight Hammer interrupted the ceremony and struck down Thrall with dark magic, casting his spirit into the four domains of the Elemental Plane. While the Aspects conceded that Thrall may be lost to the elements forever, Aggra believed that her mate could be saved, and called on the aid of adventurers of both the Horde and the Alliance to venture into the Skywall, the Abyssal Maw, Deepholm, and Firelands to rescue her beloved from an eternity of torment. Before adventurers can return Thrall’s spirit to the natural world, they must help him overcome his doubts, his wilfulness, his desires, and his rage before he is bound to his elemental cage.
During the quest, Elemental Bonds: The Vow we witness Thrall’s proposal ❥
This was actually a replay of the cutscene which you can activate at any time, which is why the colours aren’t as rich as when you see it the first time.
After the defeat of Deathwing by the hands of the Dragon Aspects, Thrall and the mortal Adventurers; Alexstraza reveals Aggra is bearing Thrall’s child.