Shang Li is suspected of murder. He runs away, and while the hunters search for him, they have plenty of time to think again. Maybe Shang Li is innocent? Isn't there someone else around with a much better reason to commit that murder? Which takes us into the second half of the movie where much more kung fu fighting takes place than in the first.

Mysterious Heroes centers around Lau Tien, master of the deadly 13-Sword Style. Thrown into prison by a group of jealous enemies, the 13-Sword Style is rarely spoken of, let alone seen, until 20 years later, when a second swordsman going by the name of Lau Tien proves to be the world's second 13-Sword expert. Action-packed martial arts chaos ensues when the enemies of the original Lau Tien vow to destroy his successor

Mysterious Heroes centers around Lau Tien, master of the deadly 13-Sword Style. Thrown into prison by a group of jealous enemies, the 13-Sword Style is rarely spoken of, let alone seen, until 20 years later, when a second swordsman going by the name of Lau Tien proves to be the world's second 13-Sword expert. Action-packed martial arts chaos ensues when the enemies of the original Lau Tien vow to destroy his successor

根据小说《三年K班》改编。17岁的京芷卉因为一次交通意外导致分班考失利进入了学习氛围较差的高三十一班，京芷卉多次尝试离开十一班都最终失败，只得将目标转向了优秀学生干部的高考加分，并为此设定了获取全班同学信任的攻略计划，原本抱着功利目的与同学接触的京芷卉却渐渐在同学们身上发现了各种优质品质，经过数次欢笑与泪水后，京芷卉开始渐渐融入到十一班的集体之中，十一班渐渐改变了吊尾班的命运，大家顺利完成高考进入各自理想大学，留下一段难以忘怀的青春记忆。