diff --git a/src/spectator.cr b/src/spectator.cr
index 3f941c0..4c2f0fc 100644
--- a/src/spectator.cr
+++ b/src/spectator.cr
@@ -1,6 +1,26 @@
+require "./spectator/*"
+
+def expect(actual : T) forall T
+  pp actual
+end
+
 # TODO: Write documentation for `Spectator`
 module Spectator
   VERSION = "0.1.0"
 
-  # TODO: Put your code here
+  @@top_level_groups = [] of ExampleGroup
+
+  def self.describe(type : T.class) : Nil forall T
+    group = DSL.new(type.to_s)
+    with group yield
+    @@top_level_groups << group._spec_build
+  end
+
+  at_exit do
+    @@top_level_groups.each do |group|
+      group.examples.each do |example|
+        example.run
+      end
+    end
+  end
 end
diff --git a/src/spectator/dsl.cr b/src/spectator/dsl.cr
new file mode 100644
index 0000000..891bfe8
--- /dev/null
+++ b/src/spectator/dsl.cr
@@ -0,0 +1,76 @@
+require "./example_group"
+
+private macro _spec_add_example(example)
+  @examples << example
+end
+
+module Spectator
+  class DSL
+    @examples = [] of Spectator::Example
+
+    protected def initialize(@type : String)
+    end
+
+    def describe
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#describe")
+    end
+
+    def context
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#context")
+    end
+
+    def it(description : String, &block) : Nil
+      example = Spectator::Example.new(description, block)
+      _spec_add_example(example)
+    end
+
+    def it_behaves_like
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#it_behaves_like")
+    end
+
+    def subject
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#subject")
+    end
+
+    def subject!
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#subject!")
+    end
+
+    def let
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#let")
+    end
+
+    def let!
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#let!")
+    end
+
+    def before_all
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#before_all")
+    end
+
+    def before_each
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#before_each")
+    end
+
+    def after_all
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#after_all")
+    end
+
+    def after_each
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#after_each")
+    end
+
+    def around_each
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#around_each")
+    end
+
+    def include_examples
+      raise NotImplementedError.new("Spectator::DSL::ExampleGroupDSL#include_examples")
+    end
+
+    # :nodoc:
+    protected def _spec_build : Spectator::ExampleGroup
+      Spectator::ExampleGroup.new(@examples)
+    end
+  end
+end
diff --git a/src/spectator/example.cr b/src/spectator/example.cr
new file mode 100644
index 0000000..4c97fe9
--- /dev/null
+++ b/src/spectator/example.cr
@@ -0,0 +1,10 @@
+module Spectator
+  class Example
+    def initialize(@description : String, @block : ->)
+    end
+
+    def run
+      @block.call
+    end
+  end
+end
diff --git a/src/spectator/example_group.cr b/src/spectator/example_group.cr
new file mode 100644
index 0000000..bbccd4b
--- /dev/null
+++ b/src/spectator/example_group.cr
@@ -0,0 +1,10 @@
+require "./example"
+
+module Spectator
+  class ExampleGroup
+    protected getter examples : Array(Example)
+
+    def initialize(@examples)
+    end
+  end
+end