Bid your tricks exactly, with a trump suit and a shrinking hand.
Bid exactly what you will take. Not more, not less. The hand size changes every round, so the game is never the same problem twice.
A 52-card deck. Aces are high. You need a scoresheet with a column per player.
Start at one card each and add one card per round until the deck will not stretch further, then come back down again. Some tables start high and work down instead. Either way the last round mirrors the first.
After dealing, the next card is turned face up and its suit is trump. In the final round, where every card is dealt, there is no trump.
Each player in turn says how many tricks they will take, and it is written down. The dealer bids last and may not bid the number that would make the bids add up to the number of tricks available. Somebody has to be wrong.
The player to the dealer's left leads. Follow suit if you can, otherwise play anything. Highest trump wins, or the highest card of the suit led.
Hit your bid exactly and score 10 plus 1 per trick. Bid three and take three is 13. A successful bid of zero scores 10.
Miss it in either direction and score nothing at all for the round.
Most points after the final round wins. The difference from Plump is the trump suit — Oh hell has one, Plump does not.