Loki the Nordic God of mischief had three children, the first son was Fenrir and the second child is Jormungand and the third child is Hell. When Loki was banished to Earth his child Fenrir was chained and turned into a tiny dog by Odin. And the second child Jormungand was sent to Earth with his father.
After Loki was banished he wanted to come back to Asgard. But Odin would not let him return. So Odin told Hell Loki's daughter that Loki hated her so she made a sceem to kill her father.
Loki tyried to convince her that he loved her but she wouldn't listen to him. Then she looked into his heart and saw that he loved her so she was happy and freed her brothers from Odin's imprisonment.