Follow the Convoy

Follow the Convoy is a sub-quest of  Infiltrate Moonrise Towers in Act Two of Baldur's Gate 3. It can be started by speaking with Goblin near the entrance to the Shadowlands from aboveground in the Mountain Pass.

The drider offers safe passage through the Shadow-Cursed Lands.

Objectives

Objectives and journal entries may vary pending story decisions and outcomes.

Retrieve the instrument from the drow Minthara.

• We met a group of cultists preparing to travel to Moonrise Towers. They are waiting for a guide who must be summoned using an instrument the drow Minthara possessed.

Find the cultist camp.

• We reached the shadow-cursed lands. We can use Minthara's instrument to summon a creature to guide us to Moonrise Towers, but we need to find the right place to play it.
• We met a goblin who told us of a group of cultists up ahead. We should check out their camp.

Summon the guide.

• We met a group of cultists preparing to travel to Moonrise Towers. They are waiting for a guide. We should use Minthara's instrument to summon the guide.

Talk to the drider.

• We summoned the drider. We should speak to him.

Follow the drider.

• We need to stay close to the drider in order to reach Moonrise Towers.

Defend the convoy.

• Harpers are attacking the convoy - we must defend it.

Continue toward Moonrise Towers.

• We defeated the Harpers and should continue following the drider.

Quest Complete

• The drider can no longer aid us.
• The drider made it to Moonrise Towers.
• We turned against the drider and sided with the Harpers.
• We reached Moonrise Towers without help from the cultists.

Walkthrough

If using the Rosymorn Monastery Trail route, as part of  Travel through the Mountain Pass, then a goblin greets the party and asks if they are the True Souls the goblin is expecting. The goblin tells the party to grab a torch, stick to the light as much as possible, and go to the rendezvous point to wait for the guide to Moonrise Towers. This starts the quest.

If approaching the rendezvous point, an orc named Kansif asks if they have what is needed to summon the guide. To summon the Drider guide, Vez explains that a special lyre is needed - the Spider's Lyre. This lyre can be looted off Minthara's corpse if she is killed or knocked out during  Defeat the Goblins, gifted by Minthara if she was sided with during  Raid the Grove, or by rescuing Nere in  Free True Soul Nere and siding with him. Once the lyre has been produced, a DC 16 Performance check is prompted, but the result is the same whether it is passed or failed - the guide just makes a snide comment if it was played poorly. If not having the lyre, then they can summon the guide using illithid powers ( DC 14 Wisdom check). Additionally, Barbarians, Sorcerers, Bards, Clerics, and Paladins all have special dialogue options to summon the guide.

If killing Kansif and the cultists before summoning the guide, he can still be summoned through the  Play the Spider's Lyre action.

The guide in question is a Drider named Kar'niss. He owns a functioning Moonlantern and has been tasked with shuttling cultist initiates to Moonrise Towers. He ferries the party to Moonrise. Once agreeing, Kar'niss takes off and the party must remain in the glow of his Moonlantern to stave off the shadow curse.

During the trek, a group of Harpers ambush the convoy. The party can betray the convoy and help the Harpers, or fight alongside the convoy in the hopes of being more convincing at Moonrise Towers. If siding with the Harpers, they take the drider's Moonlantern and refer the party to the Last Light Inn. If not making Jaheira hostile at the Inn, then the party can obtain the Moonlantern by speaking with Isobel. If sticking with the convoy, then Kar'niss safely guides the party to the front entrance to Moonrise Towers.

If having visited the Last Light Inn and avoided making Jaheira hostile at the Inn before siding with the Harpers, they question the party after defeating the convoy and demand "Jaheira's godsend" explain their presence: the party can either blame the ambush for ruining their infiltration ( DC 16 Persuasion check) or lie that they were captured by the convoy ( DC 16 Deception check). Failing either turns the ambushing Harpers hostile (only them). Succeeding either results in the Harpers handing over the Moonlantern.

Alternatively, the party can also attack the cultists and the Drider guide before they move to Moonrise Towers, which allows to take the Moonlantern from Kar'niss' corpse.

If resolving Marcus' attempt to abduct Isobel before meeting the convoy at the rendezvous point the convoy has despawned and can only be encountered by going to the house where the convoy ambush takes place. This triggers the ambush event where the party members are among the harper ambushers.