In Walk the Plank!; players represent the worst pirates in a captain's crew. The captain has rounded you all up because you're all lazy and stupid and simply not worth the rum and loot you get paid. That said; the captain has decided he's willing to keep two of you in his crew. To prove you're worthy; you will fight amongst yourselves; trying to shove other players' pirates off the end of the plank while keeping yours alive!
In game terms; each round players secretly stack three of their ten action cards; then they take turns revealing and playing those actions one by one no matter what's gone wrong between the planning and the doing. If you plan to have a pirate shove someone off the plank on your third move and all he sees are his own best mates; he will still shove away! Some cards bear a skull on them; and these powerful cards must remain on the table the round after they're played; but otherwise players then pick up their action cards and start a new round. As soon as two or fewer pirates remain on board; the game ends and the owner (or owners) of these pirates win! Watch out; though; as sometimes every pirate will end up in the drink; which means that no one wins other than the sharks circling in the water below...