得知1岁的儿子罹患绝症后，独立游戏开发者莱恩将儿子的故事改编为一款名为That Dragon, Cancer的游戏。摄制团队耗时2年跟拍，记录下了这段令人动容的开发过程和情感历程。

　　Ryan Green's four year old son Joel has terminal cancer. Ryan, an indie video game developer, is building an unusually poetic video game to document his experiences raising a dying child, and to honor Joel while he is still alive. 'Thank You For Playing' follows the creation and growing success of Ryan's game, as his son's health continues to decline.