It has been a week since Steve was stuck in the nether. Surviving only using loot he could find in the nether fortress. A ghast nearly killed him the other day and his netherrack hut won't last long.
Steve was leaning against a wall when he found a solution. He has enough weapons for it. He can relight the portal with only one thing. A fire charge. There are two sources. Ghasts and crafting. Ghasts require lots of experience to make them aim at the portal properly. The less risky source is killing them from a distance and a number of other monsters to get resources.
Steve went for the easy way. First, he hunted down magma cubes for magma cream. Then, he killed a blaze for it's rods. He crafted blaze powder afterwards. Here's the difficult part. Defeating a ghast. His only choice is archery. He only has 6 arrows and a normal bow. First shot missed. Second shot hit it. Third shot hit it too. Fourth shot hit it again. Fifth shot missed. A final hit should kill it. But Steve only has one arrow left. One chance only...