The story introduces us to Sylpha, an elf who, upon seeing an intruder enter her village, is cursed with a symbol on her lower abdomen, turning her into a walking semen sack that triggers her lust and desire for sex. When she sees that this curse doesn't disappear, she decides to search for the intruder who placed it on her and, in the process, recover the treasure he stole from her village. Along the way, she will face slimes, tentacle monsters, and will have to work hard to reach her destination.