 Groundskeeper Willie explains the bees are dying all over Springfield by loss of habitat, thus contracting a fatal disease.Lisa seeks help from Homer (who at first was unwilling to save the bees until Lisa informs him that the bees make honey and, if they died, there will be no more honey) and Professor Frink who has an uninfected queen bee sting Lisa releasing pheromones which attracts many uninfected bees, which form a bee beard.After trying to keep the bees in the Simpson home, Lisa and Marge find an abandoned greenhouse for the bees to live in.