It's a C/C story set post Avengers. Clint doesn't know Coulson is alive and is on mission somewhere where the safe house is on the beach. The only clear things I remember are:
1. Coulson was sitting in a chair/chaise on the beach either reading or doing paperwork.
2. Clint thinks he hallucinates him and thinks he's going crazy and asks him to just hold off until he can debrief. This is further proven to him when no one at the pick up (helicopter?) acknowledges Coulson at all.
3. Natasha meets them when the helicopter touches down.