diff --git a/netxml2kml/Program.cs b/netxml2kml/Program.cs
index e5dff12..3f36a31 100644
--- a/netxml2kml/Program.cs
+++ b/netxml2kml/Program.cs
@@ -1,3 +1,91 @@
-// See https://aka.ms/new-console-template for more information
+using System.CommandLine;
+using System.Text;
+using System.Xml;
+using System.Xml.Serialization;
+using netxml2kml.Models;
 
-Console.WriteLine("Hello, World!");
\ No newline at end of file
+namespace netxml2kml;
+
+static class Program
+{
+    static async Task<int> Main(string[] args)
+    {
+        var inputOption = new Option<FileInfo?>(
+            aliases: new[] {"-i", "--input"},
+            description: "The file to be converted to .kml format.");
+
+        var outputOption = new Option<FileInfo?>(
+            aliases: new[] {"-o", "--output"},
+            description: "The name of the file to be created.");
+
+        var rootCommand =
+            new RootCommand("netxml2kml – .netxml to .kml converter.");
+        rootCommand.AddOption(inputOption);
+        rootCommand.AddOption(outputOption);
+
+        rootCommand.SetHandler((inputFile, outputFile) =>
+            {
+                if (outputFile == null)
+                {
+                    outputFile = new FileInfo($"{inputFile!.Name.Substring(0, inputFile!.Name.Length - inputFile.Extension.Length)}.kml");
+                }
+
+                var serializer = new XmlSerializer(typeof(detectionrun));
+                var detectionRun = (detectionrun?) serializer.Deserialize(XmlReader.Create(inputFile!.OpenRead(), new XmlReaderSettings {DtdProcessing = DtdProcessing.Parse}));
+
+                if (detectionRun == null)
+                {
+                    throw new ArgumentNullException();
+                }
+                
+                var kmlString = GenerateKml(detectionRun, inputFile.Name);
+                var streamWriter = new StreamWriter(outputFile.OpenWrite());
+                streamWriter.Write(kmlString);
+                streamWriter.Close();
+            },
+            inputOption, outputOption);
+
+        return await rootCommand.InvokeAsync(args);
+        
+        string GenerateKml(detectionrun detectionRun, string name)
+        {
+            var sb = new StringBuilder();
+
+            sb.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+            sb.Append("\n<kml xmlns=\"http://www.opengis.net/kml/2.2\">");
+            sb.Append("\n  <Document>");
+            sb.Append($"\n    <name>Capture file: {name}</name>" +
+                      $"\n    <description>Started on {detectionRun.starttime}." +
+                      $"\nCaptured {detectionRun.wirelessnetwork.Count(wn => wn.type != "probe")} AP(s) and {detectionRun.wirelessnetwork.Count(wn => wn.type == "probe")} client(s)</description>");
+
+            foreach (var wn in detectionRun.wirelessnetwork)
+            {
+                // If wireless network is a client – skip
+                if (wn.type == "probe")
+                {
+                    continue;
+                }
+                
+                sb.Append("\n    <Placemark>");
+
+                sb.Append($"\n      <name>{wn.SSID.First().essid.First().Value}</name>.");
+                sb.Append($"\n      <description>Manufacturer: {wn.manuf}." +
+                          $"\n        Last update: {wn.lasttime}." +
+                          $"\n        Channel: {wn.channel}." +
+                          $"\n        BSSID: {wn.BSSID}." +
+                          $"\n        Frequency {wn.freqmhz}." +
+                          $"\n      </description>");
+                sb.Append($"\n      <Point>" +
+                          $"\n        <coordinates>{wn.gpsinfo.First().peaklon},{wn.gpsinfo.First().peaklat},{wn.gpsinfo.First().peakalt}</coordinates>" +
+                          $"\n      </Point>");
+            
+                sb.Append("\n    </Placemark>");
+            }
+
+            sb.Append("\n  </Document>");
+            sb.Append("\n</kml>");
+        
+            return sb.ToString();
+        }
+    }
+}
\ No newline at end of file