diff --git a/migrations/Version20260618213556.php b/migrations/Version20260618213556.php
new file mode 100644
index 0000000..d0b3d86
--- /dev/null
+++ b/migrations/Version20260618213556.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260618213556 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE TABLE scenario (id UUID NOT NULL, distribution_mode VARCHAR(255) NOT NULL, name VARCHAR(255) NOT NULL, description TEXT DEFAULT NULL, PRIMARY KEY (id))');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('DROP TABLE scenario');
+    }
+}
diff --git a/src/Entity/Scenario.php b/src/Entity/Scenario.php
new file mode 100644
index 0000000..e02ef52
--- /dev/null
+++ b/src/Entity/Scenario.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace App\Entity;
+
+use App\Enum\DistributionMode;
+use App\Repository\ScenarioRepository;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Uid\UuidV7;
+
+#[ORM\Entity(repositoryClass: ScenarioRepository::class)]
+class Scenario
+{
+    #[ORM\Id]
+    #[ORM\Column(type: 'uuid')]
+    private UuidV7 $id;
+
+    #[ORM\Column(enumType: DistributionMode::class)]
+    private DistributionMode $distributionMode = DistributionMode::EVEN;
+
+    #[ORM\Column(length: 255)]
+    private string $name;
+
+    #[ORM\Column(type: Types::TEXT, nullable: true)]
+    private ?string $description = null;
+
+    public function __construct()
+    {
+        $this->id = new UuidV7();
+    }
+
+    public function getId(): UuidV7
+    {
+        return $this->id;
+    }
+
+    public function getDistributionMode(): DistributionMode
+    {
+        return $this->distributionMode;
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function getDescription(): ?string
+    {
+        return $this->description;
+    }
+
+    public function setDistributionMode(DistributionMode $distributionMode): static
+    {
+        $this->distributionMode = $distributionMode;
+
+        return $this;
+    }
+
+    public function setName(string $name): static
+    {
+        $this->name = $name;
+
+        return $this;
+    }
+
+    public function setDescription(?string $description): static
+    {
+        $this->description = $description;
+
+        return $this;
+    }
+}
diff --git a/src/Repository/ScenarioRepository.php b/src/Repository/ScenarioRepository.php
new file mode 100644
index 0000000..0ec938e
--- /dev/null
+++ b/src/Repository/ScenarioRepository.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Repository;
+
+use App\Entity\Scenario;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @extends ServiceEntityRepository<Scenario>
+ */
+class ScenarioRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, Scenario::class);
+    }
+}
diff --git a/tests/Entity/ScenarioPersistenceTest.php b/tests/Entity/ScenarioPersistenceTest.php
new file mode 100644
index 0000000..3e56db4
--- /dev/null
+++ b/tests/Entity/ScenarioPersistenceTest.php
@@ -0,0 +1,127 @@
+<?php
+
+namespace App\Tests\Entity;
+
+use App\Entity\Scenario;
+use App\Enum\DistributionMode;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Symfony\Component\Uid\UuidV7;
+
+final class ScenarioPersistenceTest extends KernelTestCase
+{
+    private EntityManagerInterface $em;
+
+    protected function setUp(): void
+    {
+        self::bootKernel();
+        $this->em = self::getContainer()->get(EntityManagerInterface::class);
+    }
+
+    public function testItPersistsAScenarioWithAUuidId(): void
+    {
+        $scenario = new Scenario();
+        $scenario->setName('Household Budget');
+
+        $this->em->persist($scenario);
+        $this->em->flush();
+
+        $id = $scenario->getId();
+        self::assertInstanceOf(UuidV7::class, $id);
+
+        $this->em->clear();
+
+        $reloaded = $this->em->find(Scenario::class, $id);
+
+        self::assertNotNull($reloaded, 'Scenario must be retrievable from the database after an identity-map clear.');
+        self::assertInstanceOf(UuidV7::class, $reloaded->getId());
+        self::assertSame('Household Budget', $reloaded->getName());
+    }
+
+    public function testDistributionModeDefaultsToEvenWhenNotExplicitlySet(): void
+    {
+        $scenario = new Scenario();
+        $scenario->setName('Default Mode Scenario');
+
+        $this->em->persist($scenario);
+        $this->em->flush();
+
+        $id = $scenario->getId();
+
+        $this->em->clear();
+
+        $reloaded = $this->em->find(Scenario::class, $id);
+
+        self::assertNotNull($reloaded);
+        self::assertSame(
+            DistributionMode::EVEN,
+            $reloaded->getDistributionMode(),
+            'distribution_mode must default to EVEN when not explicitly set.',
+        );
+    }
+
+    public function testItRoundTripsAnExplicitlySetPriorityDistributionMode(): void
+    {
+        $scenario = new Scenario();
+        $scenario->setName('Priority Mode Scenario');
+        $scenario->setDistributionMode(DistributionMode::PRIORITY);
+
+        $this->em->persist($scenario);
+        $this->em->flush();
+
+        $id = $scenario->getId();
+
+        $this->em->clear();
+
+        $reloaded = $this->em->find(Scenario::class, $id);
+
+        self::assertNotNull($reloaded);
+        self::assertInstanceOf(
+            DistributionMode::class,
+            $reloaded->getDistributionMode(),
+            'distribution_mode must hydrate as a DistributionMode enum instance, not a raw string.',
+        );
+        self::assertSame(
+            DistributionMode::PRIORITY,
+            $reloaded->getDistributionMode(),
+            'An explicitly set PRIORITY distribution_mode must survive a flush + clear + reload round-trip.',
+        );
+    }
+
+    public function testDescriptionRoundTripsWhenSet(): void
+    {
+        $scenario = new Scenario();
+        $scenario->setName('Described Scenario');
+        $scenario->setDescription('Covers rent, groceries, and the emergency buffer.');
+
+        $this->em->persist($scenario);
+        $this->em->flush();
+
+        $id = $scenario->getId();
+
+        $this->em->clear();
+
+        $reloaded = $this->em->find(Scenario::class, $id);
+
+        self::assertNotNull($reloaded);
+        self::assertSame('Covers rent, groceries, and the emergency buffer.', $reloaded->getDescription());
+    }
+
+    public function testDescriptionIsNullableAndRemainsNullWhenNotSet(): void
+    {
+        $scenario = new Scenario();
+        $scenario->setName('Undescribed Scenario');
+
+        $this->em->persist($scenario);
+        $this->em->flush();
+
+        $id = $scenario->getId();
+
+        $this->em->clear();
+
+        $reloaded = $this->em->find(Scenario::class, $id);
+
+        self::assertNotNull($reloaded);
+        self::assertNull($reloaded->getDescription());
+    }
+}