Depends on a lot of factors. Basically, they were instructed by the Mage's Guild to kidnap the absconded Archmage of the guild and bring him back alive. But they arrive to find the Archmage already dead.
However! The party has a Changeling! They can shapechange into the Archmage, and then the party brings them back, disguised as the Archmage, the Guild takes them, pays the party, and then the party helps break them out later.
Problem: some of the wizards that were in the tower where they found the dead Archmage already found the body, know he's dead, and when the party fought them, the Cl…