生活在孤儿院的小女孩苏菲(鲁比·巴恩希尔 Ruby Barnhill 饰)总是闷闷不乐。某天的凌晨三点,她独自趴在窗口守望长夜,却无意中见到一个身形巨大的巨人(马克·里朗斯 Mark Rylance 饰)。巨人被发现后惊慌失措,匆忙中抓起苏菲一路飞奔,回到了他所在的巨人国。幸运的是这个被称作好心眼儿的巨人人如其名,他不像其他同类一样以“人豆子”为食,只吃水果和蔬菜,而且他还会把寻找到的美梦送入孩子们的梦想。这也算是对同类暴行的一种补偿。兴许是拥有共同的孤独感和善良,小小的苏菲和高大的好心眼儿慢慢熟络,并彼此信任,他们成为了毫无芥蒂和隐藏的好朋友…… 本片根据著名儿童文学作家罗尔德•达尔的同名原著改编。Ten-year-old Sophie is in for the adventure of a lifetime when she meets the Big Friendly Giant. Naturally scared at first, the young girl soon realizes that the 24-foot behemoth is actually quite gentle and charming. As their friendship grows, Sophie's presence attracts the unwanted attention of Bloodbottler, Fleshlumpeater and other giants. After traveling to London, Sophie and the BFG must convince Queen Elizabeth to help them get rid of all the bad giants once and for all.