The druids of Ireland began to feel restless. It was five years since Muirgen had retrieved the Tain from Fergus mac Roich, yet the Tuatha were still unsettled. Unexplained happenings were occurring throughout Ireland. Sidhs were becoming places of terror. The druids decided to send Muirgen back to Fergus's gravestone to find out what was wrong. Muirgen set out the next day alone, to learn what had happened to make the Tuatha so restless. Sitting down at the gravestone he began to chant:

"If this your royal rock

were your own self mac Roich

halted here with sages

searching for a roof

the reasons to our restlessness

we would understand Fergus."

A mist began to form around Muirgen. Fergus appeared to Muirgen, with an urgency unrenowned. He began explaining a tale which men had distorted to such an extent that the Dagda, himself, had become upset. To not confuse men further, Fergus used the names Joseph, Mary, and Cain, instead of their original names Lugaidaire, Noisach Etaid, and Feraille Fuaitach, although these names must appear here. The story is the birth of the Savior of Man, and it begins as follows ...