Agents of shield is full of betrayal and friendships it is one of the best mcu tv shows (in my opinion) and consists of 7 seasons it also pays a huge part in the the mcu storyline showing what happened after and during the movies 'Thor: the dark world' and 'Avengers: age of Ultron'. The shield agents also share a common enemy as the avengers (hydra) who appear in most marvel movies (mainly the captain America movie franchise)!