春天來了，遷徙的魚鷹重返公園。懷孕的歐洲馬鹿下山到低地產子，兩隻大公雞在山腰為了爭奪交配權，而展開一場名為「力」的奇觀。
It is spring, and migrating ospreys return to the park. Pregnant red deer come down from the mountain tops to the lowlands to calve. On a mountainside, two big cocks fight for the right to mate in a spectacle called a lek.
