The elder sister Merriman is the successor leader of the Elf clan and an Elf mage; the younger sister Merritt is the No. 03 Nun in the Holy Land and the captain of the SOTS airborne team. In an accident, her sister Merriman was saved by a vampire and had supernatural powers. He had no choice but to leave his sister Merritt and go alone to the black tower set up by his aunt Long Mie. When an alien invaded the Holy Land, her sister Merritt appeared and rescued her sister. The two sisters worked together to resist the aliens and eventually repel them.
Motto: Don't panic when encountering problems, solve them calmly