Unusual Fishing Outing

You play as a small little fisherman who takes a nice outing to fish at a pond. Except ... something usual happens! Your fishing line starts floating upwards! What will you find up there? How high can you go? Will you find a UFO? Sound credits: paulprit, Augdog, frosthardr, j1987, aarrnnoo, tyballer92, hargissssound