How to implement a table with one field having multiple rows in another table

How do I implement the Plans table with multiple locations from the Locations table? Like "planX" has many "locations" like NL, FR, US,...

Here I only can have one relation.

Plans table

Table plans {
      id integer pk
      title varchar
      memory varchar
      disk_type integer [ref: > disk_types.id]
      storage varchar
      cpu_model varchar
      cpu_cores integer
      uplink integer [ref: > uplinks.id]
      location integer [ref: > locations.id]
      price integer
      provider_id integer [ref: > providers.id]
    }

Locations table:

Table locations {
  id integer pk
  name varchar
  country_code varchar
}

You can create a junction table which maps plans to locations:

CREATE TABLE plan_location (
    plan_id INT,
    location_id INT
);

You would use this table as follows:

SELECT p.*, l.*
FROM plans p
INNER JOIN plan_location pl
    ON pl.plan_id = p.id
INNER JOIN locations l
    ON l.id = pl.location_id;