The bells you ring to summon the council of seven? If so, they appear and start a ritual where you go through the land of the dead to get the blessing of the 7 gods and become to the divine one. During the ritual janus and his minions appear in the summoning chambers and slaughter all the council cept 2 members (I think its 2). It takes you about 3 months to find your way out of the lands of the dead because the council was suppose to summon you back.
Anyways, when you get back you've become a demi god and bam wham kill the final boss. But you are too late. The Prince of lies (was that his name? I forgot) was already summoned into a small boy. You couldnt bring yourself to kill the boy ( the prince of lies) so you carry him in your arms out of the dungeon. The end. Also, you are not the same character in BD as in DD. In BD you are a paladin serving the divine one.