This modpack consists of some very destructive mods, mostly natural disaster mods. It dosen't really have some heartfelt backstory, or any storyline at all. its just fun to open in creative and mess around with.
Type in the modpack name (DestructionPack) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select DestructionPack from the list on the left. The launcher will handle everything else!