In the heyday of e-sports, “Gunpla Battle” is leading the way in popularity. By scanning their own gunpla and controlling a life-size Gundam projection, they aim to win the national championship. Hiro is the pilot, Takumi is the builder, Kentaro is the programmer, Taichi is the commander, and Sota is the armorer. A variety of crises await these adolescents. Farewells from their friends and conflicts with rival teams. This is a coming-of-age ensemble drama about high school students who gradually grow up with dreams and friendship in their hearts through Gunpla battles.

在某个大于瓢泼的早晨，女高中生山本由佳里（伊藤万理华 饰）手忙脚乱洗漱准备，偏偏有人在她家门口的名牌上留下了类似“F”的记号。她被妈妈命令擦掉记号，此外还要坐爸爸的车送弟弟去幼儿园，结果错过了与好友松原奈保一同上学的约定。谁知奈保乘坐的巴士遭遇严重车祸，好友在惨烈的事故中不幸身亡。在此之后，由佳里被神秘的符号所困扰，而逝去好友的身影时不时出现在她的面前，又让她的精神几乎崩溃。蹊跷诡异的事件愈演愈烈，本就被黑暗笼罩的山本一家走向破碎边缘，由佳里内心中的秘密也将悄然浮现……
本片根据恐怖小说作家铃木光司的短篇作品《F》改编。