diff --git a/Cargo.lock b/Cargo.lock
index 71c3f53..83c69ed 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "base64"
+version = "0.21.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35636a1494ede3b646cc98f74f8e62c773a38a659ebc777a2cf26b9b74171df9"
+
+[[package]]
+name = "bitflags"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "executor"
 version = "0.1.0"
@@ -10,6 +25,77 @@ version = "0.1.0"
 name = "pl-cli"
 version = "0.1.0"
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.70"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "ron"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b91f7eff05f748767f183df4320a63d6936e9c6107d97c9e6bdd9784f4289c94"
+dependencies = [
+ "base64",
+ "bitflags",
+ "serde",
+ "serde_derive",
+]
+
 [[package]]
 name = "rpl"
 version = "0.1.0"
+dependencies = [
+ "ron",
+ "serde",
+]
+
+[[package]]
+name = "serde"
+version = "1.0.193"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25dd9975e68d0cb5aa1120c288333fc98731bd1dd12f561e468ea4728c042b89"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.193"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c8b28c477cc3bf0e7966561e3460130e1255f7a1cf71931075f1c5e7a7e269"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
diff --git a/crates/rpl/Cargo.toml b/crates/rpl/Cargo.toml
index e6e42c6..e406f11 100644
--- a/crates/rpl/Cargo.toml
+++ b/crates/rpl/Cargo.toml
@@ -6,3 +6,5 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+serde = { version = "1.0.193", features = [ "derive" ] }
+ron = "0.8"
diff --git a/crates/rpl/src/lib.rs b/crates/rpl/src/lib.rs
index 7d12d9a..c5102f3 100644
--- a/crates/rpl/src/lib.rs
+++ b/crates/rpl/src/lib.rs
@@ -1,14 +1,38 @@
-pub fn add(left: usize, right: usize) -> usize {
-    left + right
+use instructions::Instruction;
+use serde::{Deserialize, Serialize};
+
+use crate::instructions::{
+    read::{SourceFormat, SourceType},
+    write::{TargetFormat, TargetType},
+    MathInstruction,
+};
+
+pub mod instructions;
+
+pub fn from_ron(raw: &str) -> Rpl {
+    ron::from_str(raw).unwrap()
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug)]
+pub struct Rpl(Vec<Instruction>);
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
+#[test]
+fn test_simple_deserialize() {
+    const TEST_DATA: &str =
+        "([Read( (source: File(\"~/example/file.png\"), format: Png) ),Math(Add),Write(( target: File(\"~/example/out.jpg\"), format: Jpeg))])";
+
+    assert_eq!(
+        from_ron(TEST_DATA),
+        Rpl(vec![
+            Instruction::Read(instructions::read::Read {
+                source: SourceType::File("~/example/file.png".into()),
+                format: SourceFormat::Png
+            }),
+            Instruction::Math(MathInstruction::Add),
+            Instruction::Write(instructions::write::Write {
+                target: TargetType::File("~/example/out.jpg".into()),
+                format: TargetFormat::Jpeg
+            })
+        ])
+    );
 }