A little girl just moved into this town, feeling so lonely. One day, she was invited to the premises of an old man, but he did a complete turnaround once she got into the house....
The girl ninja Rin had no choice but being as the head of the group of ninjas for rest of her life. She was captured and nailed by tentacles on the way for the first mission.
Fighting sister Lion is dispached from the demon sealer headquarters. She is to seal away ancient monsters that have been released, but despite her best efforts, She turns into the prey of the slime monsters.