Hurry Up Snufkin

Wintering away from bed can't be very good for Moomins, for when spring comes Moomin has a terrible cold, and takes to bed when all the others get up. This year Snufkin is very late and Moomin worries far more than is good for him. Finally Snorkmaiden sets off to try and find Snufkin and bring him back, hoping this would bring about a speedy recovery.

Synopsis excerpt via Kitsu.