Edamame

From BoardGameGeek:

Do you know what an Edamame is? An Edamame is a kind of soja bean you can eat in japanese restaurants. It is also what you are in this game. As the chief of an Edamame clan, you will raise a dragon because you need his vital energy to bring you to live. To do so, you will have to recruit new Edamames to reinforce your clan. You will send them to work to get resources and you will also make your opponent's Edamames work for you. Lastly, you will use your resources to breed your dragon. A game of Edamame will be timed by the number of dragon cards that will be bought by the players. In a 2 players game, a round is 3 dragon improvements. In a 3 or 4 players game, a round is 4 dragon improvements. At the end of each round, everybody will check for a common intermediary objective. After 3 rounds, the game will be end by an honorship championship in which each clan will fight each other one. So, how does it work ?