本剧讲述的是新条彰、川上润、今川优人、春日司在同一家孤儿院长大，24岁时仍同住一屋，各自追逐着梦想，过着打工的日子，每年到了年末，都会一起购买彩票。结果那年买的彩票中，有一张竟然中了奖金7亿日元的一等奖。虽然四个人非常高兴，但是一天亮，中奖彩票就突然消失了，四个人都变得疑神疑鬼。当发现谁是抢彩票的“凶手”时，四个人最后会给出什么样的答案？围绕着失踪的彩票而受到考验的发小们的友情，充满人情味的怒涛式娱乐即将拉开帷幕。

The story follows four childhood friends who grew up in an orphanage: Akira, Jun, Tsukasa and Yuuto. They work hard to make ends meet, but every end of the year, they buy lottery tickets together. That year, one of the 10 lottery tickets they bought randomly won first prize! However, the winning ticket suddenly disappears, and the four friends become suspicious of each other and start looking for the culprit among themselves…

7億円の当たりくじを巡って“金”か“友情”か究極の選択を迫られる。家族同然の幼なじみ4人が最後に出す答えとは…