Plugs are deployed along a wellbore to form fluid barriers for associated stages. The plugs include a first plug that includes a first material that reacts with a first agent and does not react with a second agent and a second plug that includes a second material that reacts with the second agent and does not react with the first agent. A first stimulation operation is performed in the stage that is associated with the first plug; and a first agent is communicated into the well to react with the first material to remove the first plug. A second stimulation operation is performed in the stage that is associated with the second plug. The second agent is communicated into the well to react with the second material to remove the second plug.