Ian Lionheart is a royal knight of a small kingdom and is in love with the princess of that kingdom...both of them are In love with each other but one day when the princess was on her small trip suddenly they were attacked by the princes of the Empire ....and both the princess and Ian lose their life in that attacked. But when Ian died he found himself in a dark place...and got a second chance to avenge for his love...by obtaining a "Cursed system". Will he be able to avenge his love ...or will he devoured by the cursed system??