Super Kem's

There are 2 teams in this card game.
Players exchange the cards with each other trying to be the first to match 4 indetical cards in hand and make the secret, pre-agreed sign with their partner, who must quickly ring the bell and say "Kem's!" to score a point. But if opponent team rings the bell first and shouts "Counter-Kem's!" they score a point instead.

Team who has the most points at the end of the game wins the game.

Contents:

52 cards,
6 sign cards,
2 wild cards,
a doorbell,
a bag