Meet the treacherous Alpheus in this twenty-eighth Goddess Girls adventure! After the sneaky river god Alpheus takes a precious cup from a river nymph, it's up to Artemis to get it back! When Alpheus challenges Artemis to a surprisingly easy bet, with the winner getting the cup, Artemis thinks it's too good to be true--and realizes Alpheus will stop at nothing to win. Can Artemis be a hero to her friends?