diff --git a/redminecli/gen_tree.py b/redminecli/gen_tree.py
new file mode 100644
index 0000000..73ede02
--- /dev/null
+++ b/redminecli/gen_tree.py
@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+class Node:
+    def __init__(self, value):
+        self.value = value
+        self.children = []
+
+def gen_children_nodes(children_issues):
+    children_nodes = []
+    for child_issue in children_issues:
+        id = child_issue['id']
+        subject = child_issue['subject']
+        child_node = Node("[%d] %s" % (id, subject))
+
+        children_nodes.append(child_node)
+        if 'children' in child_issue:
+            child_node.children = gen_children_nodes(child_issue['children'])
+    return children_nodes
+
+
+def show_subtask_tree(children_issues):
+    main_node = Node('')
+    main_node.children = gen_children_nodes(children_issues)
+
+    return show(main_node)
+
+
+def show(node, seq_is_last_child = []):
+    ret = ""
+    if seq_is_last_child:
+        for b in seq_is_last_child[:-1]:
+            if b:
+                ret += u"   "
+            else:
+                ret += u"│  "
+        if seq_is_last_child[-1]:
+            ret += u"└── "
+        else:
+            ret += u"├── "
+    ret = ret + node.value
+    for idx, c in enumerate(node.children):
+        ret = ret + u"\n" + show(c, seq_is_last_child + [idx == len(node.children)-1])
+    return ret
+
diff --git a/redminecli/main.py b/redminecli/main.py
index ce58516..e7d4c45 100755
--- a/redminecli/main.py
+++ b/redminecli/main.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
 
 from __future__ import print_function
 
@@ -16,7 +17,9 @@
     from configparser import ConfigParser
 
 
+
 from . import __version__
+from . import gen_tree
 
 
 config_file_path = "~/.redmine-cli"
@@ -95,9 +98,22 @@ def cmd_issues(args):
     print_issues(data)
 
 def cmd_issue(args):
-    data = get_json("/issues/{issue}.json".format(issue=args.issue_id))
-
-    print(data["issue"]["subject"])
+    data = get_json("/issues/{issue}.json?include=children".format(issue=args.issue_id))
+    is_verbose = args.verbose
+
+    if is_verbose:
+        issue = data["issue"]
+        print("Title: %s" % issue["subject"])
+        print("Status: %s" % issue["status"]["name"])
+        print("Author: %s" % issue["author"]["name"])
+        print("description:")
+        #TODO: description can be html/markdown etc.
+        print(issue["description"])
+        if 'children' in issue:
+            print(gen_tree.show_subtask_tree(issue['children']))
+
+    else:
+        print(data["issue"]["subject"])
 
 def cmd_query(args):
     data = get_json("/projects/{project}/issues.json".format(project=args.project),
@@ -138,6 +154,13 @@ def main():
 
     parser_issue = subparsers.add_parser('issue', help="show details on an issue")
     parser_issue.add_argument("issue_id")
+    parser_issue.add_argument(
+        "-v",
+        "--verbose",
+        action="store_true",
+        default=False
+    )
+
     parser_issue.set_defaults(func=cmd_issue)
 
     args = parser.parse_args()