What happens if a container goes down in a multi-container pod?

Hello everyone,
I’m new to Kubernetes and this doubt is intriguing me. Suppose, I’ve a multi-container pod where one container is dedicated for one micro-service and all these micro-services are interconnected to each other. So, each pod represents a system. Now, suppose I have launched a deployment of 3 such pods to horizontally scale this system & in one pod what if one container goes down, does Kubernetes going to take down that pod & launch a complete new pod or is it going to launch only that container which has gone down.

It will just restart the one container.