Overgrowth is a Frozen Tundra side quest in Diablo Immortal. It triggers by talking to Fianne whenever she appears near the northern battlements of the Ruins of Sescheron.

Objectives
- Follow Fianne.
(Follow Fianne and learn about the barbarians trying to repair the ruins of Sescheron.) - Kill the Demons (0/8).
(Demons are attacking the ruins while repairs are in progress. Slay them.) - Talk to Gunnar.
(You've driven off the demons, but parts of the ruin have suffered heavy damage. Check on Gunnar.) - Follow Fianne.
(Fianne is heading to the old battlements to gather stone and repair the damage to Sescheron. Accompany her.) - Destroy the Portal (0/1).
(Demons are swarming out of a portal. Load the stones into one of their catapults and destroy it.) - Kill Vrikevist (0/1).
(The portal is gone, but the demon Vrikevist has attacked the parapets. Destroy it.) - Talk to Fianne.
(The demon is slain. Talk to Fianne.)
Transcript

- Fianne: Here it is. We're repairing Sescheron. know it sounds mad, with the demons, and the shortages, but I don't much care. We need this. Everyone's miserable, always.
Soon as we started calling this place a ruin, that's what it became.
Gunnar's been telling us all about the glory days, working on this statue. "Before the Children of Bul-Kathos wandered, many tribes gathered under one banner." Probably nonsense, but it got me thinking.
We raise up a city worthy of our homeland, maybe those that left'll come back. I'll show you the plan... if you'll help.
- Follow Fianne and see the progress of the work going on

- At the second work site
- Fianne: Jalu's reinforcing the walls so we don't have to suffer from the wind, or the snow or...

- Fianne: Again? They're coming from the south.
- Jalu: It never ends.
- After killing the demons
- Gulse: Fianne! We need help! Over here!
- After killing the Troopers attacking Gulse
- Fianne: The statue is completely shattered. Damn it.
- Gulse and Jalu rush over to Gunnar to check on him
- Gulse: By the heavens... Gunnar, are you okay?
- Jalu: I told you this is not worth your life.
- Gunnar: Ugh... I couldn't keep them all... back...

- Gunnar: I...I'm sorry for getting your hopes up. This is too much for anyone. Sescheron was generations in the making.
- Jalu: And we're fewer, and the demons are everywhere now. I'm not afraid to die, but for what? Some old walls?
- Fianne: Gunnar... Jalu... enough. We've been listening to these stories for years. Before we even got here. Nobody but us is going to call the tribes home.
You want to live in a camp for the rest of your life? Too bad. We've got the materials; we're fixing this. Tonight. - Trond: (to Gunnar) Still with us?
- Jalu: (mutters to self) Over and over. Futile.
- Gulse: I... maybe we can do this.
- Escort Fianne to the parapets in order to gather materials for repair
- Peyros: Good timing. They're swarming around the west wall. Ancestors forgive me, but I think this is it, Fianne.
- Fianne: It's a lot of them slithering out of that portal.

- Fianne starts battling them
- Peyros: The stones—we have to! I'll load them into the catapult.
- Peyros loads a stone into the catapult, then joins the battle
- Peyros: Take the shot, adventurer!

- Fianne: Ha! You'll never ruin this place. You hear me?
- A Blood Lord arrives
- Vrikevist: Your people are the ruin. Your works are always hollow.
- Some time into the battle
- Vrikevist:, Raise up your castle of snow and ash. Its falling will be the sweeter.
- Fianne: Back to Hell with you!

- Fianne: I think Jalu and Gunnar are going to quit. We'll have to start over. Good that we put the stones to use. I guess.
- Peyros: Baal's dogs can break these walls a hundred times. We'll build them back a hundred more. With twigs if we have to.
- Class: Maybe it doesn't need to be a city. It just needs to be more than what you have now.
- Fianne: Hmm. Knew I liked you.
Locations
Monsters
Bosses
- Vrikevist, Barbarian Flayer