Klaus, who was struck by lightning and found himself on the verge of death, receives a gift from the goddess—a seemingly ordinary skill: "Hatch," which allows him to hatch eggs. At first, it seems like a skill with little to offer, but when Klaus uses it on a monster egg he stumbles upon... a rare monster hatches! To make things even more unbelievable, Klaus's once-average stats begin to skyrocket, growing at an insane rate!