Justice League of America, Vol. 1

On Earth-Two, members of the Justice League and Justice Society team up against Solomon Grundy who has been coerced by an alien looking for his lost pet with which he shares a symbiotic relationship.On the League satellite, Black Canary tends to Flash who has been injured during the fight.The Hawkman and Robins of both Earths find the alien who had stolen Green Lantern's ring and manage to subdue him while the two Lanterns tackle Solomon Grundy.On both Earths, the heroes realise that the alien and his pet weakened at the same time and so bring them together, restoring them to health.