Hello!
Ben 10 is an American media franchise created by Man of Action Studios, produced by Cartoon Network Studios and owned by Warner Bros. Discovery.
Ref: https://www.nintendo.pt/Jogos/Jogos-para-a-Nintendo-Switch/Ben-10-1302903.html
Ben Tennyson is a 10 year old boy who went on vacation with his grandfather Max and his cousin Gwen. On the very first night, Ben sees a strange object falling from space, very close to him. It's an Omnitrix, a kind of watch that clings to your arm, never letting go.
@criptomaster