The Angels are hired to locate a set of stolen titanium rings that when put together in a special machine will display a list of all individuals in the witness protection program.
It is revealed that angel Dylan was once named Helen Zaas (pronounced "Helen's ass", making her the "butt" of many jokes) and is in the program herself.
It appears that whoever has stolen the rings is attempting to sell them to the highest bidder amongst the various mafia groups in the world. It is eventually revealed that former angel Madison Lee is the perpetrator of the crimes.