Now, there is one thing that all Asgardian prisoners bearing magic should know; and that is that when you are put in a cell, you shall have shackles put on you, and those shackles will stop you from using magic.
However, Loki had been recently captured and put in his cell, the guards were too busy with another; more violent, prisoner to realize that he had not had these shackles put on and tightened to the brink of pain around his wrists. This rendered Loki able to use his magic to gain access out of his cell.
Loki heard some debating going on between some of the guards, and worked out an escape plan. He snuck out of his cell, and quietly, went and crept up behind the guards. He frowned as he peered over their armoured shoulders and saw a cowering wolf pup, which had obviously found its way through from Midgard. One of the guards was ordered to kill the pup, and was just about to strike it on the neck for a quick death, when Loki piped up.
"Wait, do you really think it deserves this?"
"Well, it is our order to do so, sir."
"I will take it."
"LOKI, YOU SHALL NOT TAKE THE PUP, IT IS BETTER OFF DEAD THAN HERE!" a bellowing voice, which Loki instantly recognised as Odin's; sliced through the noise like a hot knife through butter.
The guards stepped back from the frightened puppy. The pup lifted its head and looked at Loki with crystal blue eyes, with a look which almost said "Thank you for saving my life".
Loki turned and let a smile creep across his pale lips, he stared Odin straight in the eye for a few seconds, before swiftly dashing and scooping the pup up in his arms, he ran through the halls of the buildings, until he managed to get to a pathway. One of HIS pathways- only he knew, he ran through the damp, echoing tunnel and tumbled through to the other side. Midgard.
Loki still (amazingly) had the pup in his arms, which had it's head tightly snugged against Loki's chest, and he felt it's tiny heart racing against his. Loki struggled to his feet, and gazed around at the Midgardian City. One building was instantly recognizable- Stark Tower.
Loki headed over to the tall building- feeling almost certain his brother would be there…