Here's an option.
Start with Pregens and begin the learning session In Media Res - the party is already within a dungeon and needs to recover an ancient McGuffin Of Evil. They fight past some cultists and undead then get to the temple's chamber. When they remove the McGuffin from its altar, the Evil Spirit Dude is released, slaying all the PCs and shrouding the countryside in darkness.
Then describe to them the village that has lived under Evil Dude's thumb for nigh these many years, since being unwittingly released by adventurers. They then make their real characters, and either have lived with his Undead Hordes roaming the countryside or have journeyed from the elf lands or whatever to put a stop to this menace. The campaign focuses on defeating the great evil they unleashed in the learning session, as well as his champion Death Knights - their former PCs!
That way, the pregen session isn't just learning, but an essential part of the story.
Start with Pregens and begin the learning session In Media Res - the party is already within a dungeon and needs to recover an ancient McGuffin Of Evil. They fight past some cultists and undead then get to the temple's chamber. When they remove the McGuffin from its altar, the Evil Spirit Dude is released, slaying all the PCs and shrouding the countryside in darkness.
Then describe to them the village that has lived under Evil Dude's thumb for nigh these many years, since being unwittingly released by adventurers. They then make their real characters, and either have lived with his Undead Hordes roaming the countryside or have journeyed from the elf lands or whatever to put a stop to this menace. The campaign focuses on defeating the great evil they unleashed in the learning session, as well as his champion Death Knights - their former PCs!
That way, the pregen session isn't just learning, but an essential part of the story.